[Marneko] I am the Sketchbook (Nyotaika Ryoujoku!! II) [Soba]

Classmate Hayashida fills his sketchbook with daily drawings of beautiful Hiromi Takayama, honing his craft until he can render her better than real life—and then somehow becomes her. Trapped inside the school beauty's flawless body while her reflection stares back from every mirror, he discovers his male classmates are more than eager to get their hands on the girl of their dreams, and there is no escaping their hunger. What begins as an artist's devotion spirals into a degrading ordeal of relentless group sex that leaves him bent over, filled, and drooling for more.