Someone's Girlfriend (2025)

ALL ACCORDING TO PLAN...Umimi returns to her hometown to find things have changed quite a bit. Her old junior high boyfriend, Takuto, is now dating the gorgeous Shizuku. Meanwhile, her senpai, Riku, is clearly struggling with his feelings about his best friend’s girlfriend. In order to win Takuto back, Umimi needs Shizuku out of the picture, which might give Riku exactly what he wants. But are things ever that easy when Shizuku is involved?

THE LOVE SQUARE STARTS TO COLLAPSE!Umimi will do anything to win back her ex--even enlist the help of her “big brother” Riku to break up a happy couple. And meanwhile, even though Riku hesitates to steal his best friend’s girlfriend, he can barely contain his feelings for the flirtatious Shizuku. After all, she’s been throwing herself at him throughout the school year. With everyone's passions so entangled, can their friendships survive this game of musical lovers?Nominated for the Next Manga Award of 2023, the best-selling tale of morally dubious romance continues!

THE TRUTH WILL GET SOMEONE HURT!Riku has finally accepted his feelings for his beautiful and flirtatious childhood friend, Shizuku. Unfortunately, she’s currently dating his best friend. Will he follow his heart, or will he protect his friendship instead? Meanwhile, Umimi realizes her own true feelings for Riku. The only thing missing to make this situation more complicated is a third gorgeous girl! But what are the chances of that happening?Nominated for the Next Manga Award of 2023, the best-selling tale of morally dubious romance continues!

SUMMER HEATS UP!Riku’s crush is hard enough to avoid when school is in session, but now the two have picked up summer jobs at the same beach club. All this extra time together would be great if not for the fact that Shizuku is dating his best friend. To make matters worse, Shizuku clearly caught the eye of their manager too, something she encourages to make Riku jealous. Meanwhile, Umimi and Yako turn up the heat in their own pursuits of Riku. Will any of them be lucky in love?Nominated for the Next Manga Award of 2023, the best-selling tale of morally dubious romance continues!

BREAKING POINTRiku’s summer break heats up to a boil! Three women compete for his attention, including his best friend’s girlfriend. While the two younger classmen, Umimi and Yako, grow bold, Shizuku continues to prove there’s no boundary she won’t push to tease Riku to his absolute limit. With threadbare resolve, can Riku find a way to get the girl of his dreams while not hurting those he cares about?Nominated for the Next Manga Award of 2023, the best-selling tale of morally dubious romance continues!