Haruka Aihara is an ordinary girl with an extraordinary secret: ever since childhood, she’s had an imaginary friend named Koko — a mischievous, comforting presence who’s always been by her side. But everything starts to change one spring, when Haruka finds herself falling for Sora, a quiet boy in...

A clumsy girl by the name of Mika Hanabira moves in with her childhood crush, Riku Aozora, after years of no communication with each other. Her laziness and clumsiness fill the house and Riku is neither happy nor excited for the events that’ll be waiting for him.