When It Rains, It Pours – Series Review & Episode Guide

When It Rains, It Pours is a Japanese BL series about two men in unfulfilling relationships.

When It Rains, It Pours is a Japanese BL series about two men stuck in unfulfilling relationships. The main character lives with his long-term girlfriend. While they get along, he secretly feels frustrated by her low sex drive. One night, the protagonist accidentally sends a message to the wrong email address. To his surprise, he receives a reply. As they chat back and forth, his mysterious pen pal opens up about his own romantic troubles.

With elegant writing and poignant introspections, When It Rains, It Pours tells a compelling love story. It explores emotions deeply, helping us understand the characters, their inner conflicts, and their repressed desires. The romance has a dreamy sense of serendipity, as if an invisible thread brings two soulmates together. However, the relationship drama can get messy. A few subplots aren't handled smoothly, and the finale lacks excitement.

When It Pours, It Rains Summary

Title:

ふったらどしゃぶり

Series Info:

Japan (2025)

Length:

3 hours

Total Episodes:

7 episodes

Genre:

Romance

About:

When It Pours, It Rains is a mature & interesting BL drama.

Plot

Sei and Hagiwara are coworkers.

Kazuaki Hagiwara lives with his long-term girlfriend, Kaori. They have been dating for three years. They first met as coworkers before Kaori changed jobs to become a nail technician. She dreams of opening her own shop one day. At the start of their relationship, Hagiwara and Kaori were physically affectionate. Over time, Kaori lost interest in intimacy. While they still get along, she always turns down his sexual advances. Hagiwara grows increasingly frustrated and feels unfulfilled in their relationship.

One night, Hagiwara looks up restaurants on his phone and tries to send the choices to himself. His email is kazuaki0927@kuhoo.com, but he accidentally entered the wrong address and sent it to kazuaki0927@degole.com instead. Realizing his mistake, he sends a polite email to apologize. The recipient, Sei, replies back, telling him not to worry. They continue exchanging short messages, developing a casual back-and-forth. Despite being complete strangers, their conversations feel easy and natural. Over time, they become pen pals.

Hagiwara tells his girlfriend about his new pen pal. Since Sei is just another guy, Kaori doesn't think much of it. She takes pride in respecting her partner's privacy. She trusts her boyfriend and won't snoop around on his phone. Initially, Hagiwara and Sei continue exchanging light, casual conversations. As time goes on, Hagiwara opens up about his struggles. He confides in Sei about the lack of physical intimacy in his relationship. Hagiwara admits that he and Kaori were once affectionate, but now they haven't had sex in over a year.

Sei responds by sharing his relationship struggles. He lives with his best friend, Kazuaki Fujisawa, a famous product designer. After losing his parents, Sei relied on Kazuaki for emotional support and fell in love with him. Since Kazuaki has no interest in dating or marriage, he promises to stay by Sei's side forever. However, he refuses physical intimacy and repeatedly turns down Sei's advances. Sei and Hagiwara realize the parallels in their situations. They can relate to each other.

Hagiwara works in sales at his company. He doesn't know that his pen pal, Sei, is a coworker in the business administration department. They sometimes chat at work, but only as casual colleagues. Neither of them realizes they have already shared their personal struggles with each other. At the same time, Hagiwara and Sei grow closer around the office. The more they talk, the more they get along. Whether through messages or in person, their bond continues to deepen.

When It Rains, It Pours Cast

Characters

Hagiwara

Jun Muto (武藤潤)

Hagiwara is portrayed by Japanese actor Jun Mato (武藤潤).

Kazuaki Hagiwara has been in a long-term relationship with his girlfriend, Kaori, for three years. While they still get along, their intimacy has faded. He's frustrated by her low sex drive. One night, Hagiwara accidentally sends an email to the wrong address. To his surprise, he connects with a stranger named Sei. Their casual conversations soon become deeper as Hagiwara opens up about his life.

Jun Muto

Jun Mato (武藤潤) is a Japanese actor. He is born on August 18, 2001.

Jun Muto (武藤潤) is a Japanese actor. He is born on August 18, 2001. His first BL leading role is the 2025 drama, When It Rains, It Pours. He has a supporting role in the 2021 live-action remake of Given.

Sei

Asahi Ito (伊藤あさひ)

Sei is portrayed by Japanese actor Asahi Ito (伊藤あさひ).

Sei lives with his best friend, Kazuaki Fujisawa, a famous product designer who helped him through the loss of his parents. Over time, Sei falls in love with him. However, Kazuaki refuses intimacy despite promising to stay by his side forever. By chance, Sei becomes pen pals with a stranger, unaware that it's his coworker, Hagiwara. The two unknowingly grow closer, both online and in real life.

Asahi Ito

Asahi Ito (伊藤あさひ) is a Japanese actor. He is born on January 19, 2000.

Asahi Ito (伊藤あさひ) is a Japanese actor. He is born on January 19, 2000. His BL projects include A Man Who Defies the World of BL (2021) and its sequels. He's the lead of the 2025 drama, When It Rains, It Pours.

Supporting Cast

Kaori is portrayed by Japanese actress Shiori Akita (秋田汐梨).

Kaori

Shiori Akita (秋田汐梨)

Kazuaki is portrayed by Japanese actor Hiroki Matsumoto (松本大輝).

Kazuaki

Hiroki Matsumoto (松本大輝)

Shinomiya is portrayed by Japanese actress Yui Kitamura (北村優衣).

Shinomiya

Yui Kitamura (北村優衣)

Hiraiwa is portrayed by Japanese actor Satoshi Mitsu (見津賢).

Hiraiwa

Satoshi Mitsu (見津賢)

Ayako is portrayed by Japanese actress Yuka Someya (染谷有香).

Ayako

Yuka Someya (染谷有香)

Cast Highlights

Jun Muto

Hagiwara's actor has a supporting role in the 2021 drama, Given. It is a live-action remake of the famous Japanese BL anime series.

Asahi Ito

Sei's actor has appeared in A Man Who Defies the World of BL (2021) and its sequels A Man Who Defies of the World of BL 2 (2022) and A Man Who Defies the World of BL 3 (2024).

Hiroki Matsumoto

Kazuaki's actor has a supporting role in the 2023 high school drama Mr. Sahara & Toki-kun. His character is part of the secondary couple.

Satoshi Mitsu

Hiraiwa's actor is one of the leads in the 2024 drama, Me, Him, and You. His character is part of a love triangle between three roommates.

When It Rains, It Pours Review

Review

Drama Review Score: 7.9

B
Sei and Hagiawara kiss.

When It Rains, It Pours explores a special kind of loneliness. Both protagonists are in relationships, but their partners don't wanna have sex. Every attempt ends in rejection, leaving the main characters sexually frustrated and emotionally drained. The series does a fantastic job of capturing their heartache, such as this particularly poignant line: "The word forever means being gently rejected forever." The dialogue is filled with beautiful insights like this. Somehow, the writers have found a way to turn sexual frustration into poetry.

I love how the romance starts with an accidental email. Of all the ways to find your soulmate, imagine meeting them through a message sent to the wrong person! Sei and Hagiwara become each other's mysterious pen pals. But then, plot twist! They're actually coworkers at the same company. All these coincidences make the romance feel so wonderful, almost like it's their destiny to fall in love. They're soulmates who don't realize that fate wants them to be together. Doesn't that sound so dreamy? If you're someone who enjoys romances with the invisible red string theory, When It Rains, It Pours does this arc extremely well.

The series takes its time to develop the romance. After meeting each other, Sei and Hagiwara don't just immediately jump into bed. Nope, we're in for a slow burn! The series spends multiple episodes exploring their personal lives, so we understand why both men feel so unfulfilled. As Hagiwara & Sei open up to each other, they realize how much they have in common. I love how the story builds their emotional connection so carefully. Every interaction helps us understand why they're falling in love. By the time they grow closer, I'm rooting for this couple.

Hagiwara's actor (Jun Muto) is ridiculously handsome. His sharp jawline makes him look like a model, while those brooding eyes are dangerously attractive. He also has this sophisticated aura… Maybe I'm projecting, but he looks classy and dignified. I recognize his co-star (Asahi Ito) from A Man Who Defies the World of BL. He didn't leave much of an impression on me back then, but I like his performance in When It Rains, It Pours. He plays Sei as someone who keeps all his thoughts bottled up inside. I enjoy how he brings this quiet, moody character to life.

Although I enjoy most of the story, Hagiwara and Sei's partners feel underdeveloped. Kaori and Kazuaki are involved in so much of the drama, yet I feel like I barely know them. They're like plot devices standing in the way of the main couple's happiness. I wish the series explored their perspectives more, especially why they're so reluctant to be physically intimate. Episode 6 gives Kaori an excellent scene that adds some much-needed depth to her character. Kazuaki isn't so lucky. When he explains his motivations, I don't buy it. IMO, the series mishandles his subplot.

The finale is a bit underwhelming. I expected a grand finale where the emotions sweep me off my feet. Instead, it was like, "Hmm… That could've been a memo." Also, where's the passion!? This series is about two sexually frustrated men. I expected their eventual hookup to be steamy. Instead, the encounter feels surprisingly tame. C'mon guys, show me some fireworks! Overall, When It Rains, It Pours is still an elegant BL drama with many beautifully written moments. Some of the flaws make me slightly less excited to recommend the series, but my opinion of it remains positive.

Summary

Elegant story

When It Rains, It Pours takes time to create an emotional and introspective journey. The story helps us understand Hagiwara & Sei's thoughts, feelings, and desires, making them sympathetic.

Repressed romance

This isn't a love story built on passion and impulse. It's a slow burn fuelled by longing and restraint. While the buildup is compelling, the sex feels tame for a series about expressing your desires.

Smooth acting

The strikingly handsome Jun Muto commands the screen with his sharp features and brooding presence. His co-star (Asahi Ito) brings a quiet intensity to Sei, making his character feel enigmatic.

Happy ending

When It Rains, It Pours has a mildly happy ending, resolving the fallout from the angsty relationship drama. While the finale brings Hagiwara and Sei together, it lacks a spark of excitement.

Subdued artistry

Visually, the series leans into its moody aesthetic, creating a soft and reflective atmosphere. While nothing about the cinematography is flashy, it suits the story's quiet, melancholic tone.

79%

When It Rains, It Pours is a beautifully written drama about repressed desires and emotional connections. A few lacklustre subplots and an unsatisfying finale keep it from fully soaking me in.

When It Rains, It Pours Episodes

Episode Guide

Sei and Kazuaki kiss.

When It Rains, It Pours has a total of 7 episodes. Each episode is around 24 minutes long. It is a medium-length BL drama, and you can finish the entire series in under 3 hours. When It Rains, It Pours started on January 10, 2025 and finished on February 21, 2025.

When It Rains, It Pours is adapted from a Japanese story. The original work is by Michi Ichiho (一穂ミチ).

Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7

When It Rains, It Pours Information

MBS

MBS is a Japanese television studio. Since 2022, it has started producing numerous BL dramas under the name Tunku Shower.

Mainichi Broadcasting System (MBS) is a Japanese television studio. Since 2022, it has started producing numerous BL dramas under the name Tunku Shower. Its portfolio includes the romantic comedies Mr. Unlucky Has No Choice but to Kiss and Senpai, This Can't Be Love. It also produced Takara-kun & Amagi-kun, Eternal Yesterday, and Candy Color Paradox.

Director

Miki Tomita (富田未来) and Natsuki Takahashi (高橋名月) are Japanese directors. They co-directed the 2025 drama, When It Rains, It Pours. Miki also co-directed Takara's Treasure (2024), while Natsuki worked on Jack o' Frost (2023). Natsuki also wrote the screenplays for My Personal Weatherman (2023) and My Strawberry Film (2024).

  1. Really enjoyed this more adult-oriented drama. It's more complex than your average BL drama, with a clever, intriguing and engaging storyline. Very nuanced performances by both leads, and and the entire supporting cast. I thought that their character development, that developed over the 7 episodes, was very believable, as they both revealed their frustrations and motivations. Their connection, motivations and ultimate resolution really hit home.

    One of the better dramas of the year, and will do a rewatch for sure.

  2. As much as I'd love the idea of the steamy sex, I think they delivered the sex scene so beautiful. It captured how mixed their emotion during the time, from the guilty feeling, excitement, passion, love, and lust. It mixed and make such a dramatic and emotional scene for me.

  3. Awww I enjoyed this. This is my kind of BL drama. Adult-themed and mature, not childish lol. I really liked Hagiwara's actor. He's so charming and cute and has a great smile. I may have watched it mainly because of him. Hahaha. Great casting!

  4. For me it's the best series 2025 (so far).
    The dread I felt from "Hagiwara" was on another level…
    And because it is based on the fact that 48.3% of marriaged couples are sexless in Japan makes this story even more powerful.

  5. I really enjoyed how understated and artfully this series was. I felt the emphasis on honest communication, acceptance of the other, and kindness as central to a mature relationship. I grew up in a seasonally rainy place so rain is comforting to me and triggers a response to pause & reflect with a book, film, or conversation to feel cozy. This one is perfect for that & I’ll watch again several times

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