Series: Someone's Girlfriend

Someone's Girlfriend Vol. 3 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. 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...