Pure Heart Vol. 1
Hyouta Fujiyama (Author)

Tozaki is a freelance writer who, through a coincidental assignment, is reunited with his first high school crush, Kurata. Certain that the once-popular athlete doesn't remember him, Tozaki confesses his past feelings after a night of drinking together - but Kurata does remember. Curious enough to agree to a one-night stand, will Kurata develop the romantic feelings Tozaki always hoped for? Or is the relationship that follows between them merely Kurata's way of humiliating his bookish, former schoolmate?