Macharge

I was just playing for a while… and the key… I dropped it into the drain.

She was a tomboy… big emphasis on "WAS". When he meets his childhood friend again, the one he thought was a boy, he discovers that she was actually a girl, who has grown up to become a beautiful young woman! She takes care of him, they go on a date to the park together, and there are lots of sweet and sour situations! (Source: Melonbooks)

Official anthology of "Gochuumon wa Usagi desu ka?"/"Is the order a rabbit?". Contains non-canon comics set in the Gochiusa universe by various mangaka's affiliated with Kirara MAX and fan artists.