Lonely Ginger no Okiniiri

When high-schooler Tsubasa is saved from some bullies by the totally dashing Yuu, it's love at first sight. Tsubasa ends up following Yuu around like a dog, and even becomes a regular at the club Yuu DJs at. But one day, as he's waiting obediently for his master to come back, Tsubasa accidentally drinks some alcohol. Yuu somehow manages to take home his tipsy, jovial, and clingy admirer, but then Tsubasa disappears from Yuu's life altogether... (Source: Renta!)