18+ Iketeru Futari

16-year old Keisuke Saji loves to fantasize about young beautiful women. He hopes to land the object of his affection, Koizumi Akira. However, Koizumi hates Saji (as well as all men) to the point of assault. While most guys take Koizumi's cold shoulder as a hint, Saji pursues head-on without having rejection faze him.

(Source: Wikipedia)

Included one-shots:
Volume 1: Channel Artemis♥
Volume 7: Joshikousei Imadoki-teki Houkago Jijou
Volume 9: Joshikousei Hasshin Kouza
Volume 10: Bangai-hen: Fuuun Joshikousei Kenkaku Retsuden
Volume 25: Joshikousei Kakumei Zenya: Iketeru Futari Bangai
Volume 30: Arigachi na Hanashi desu ga Shinuka to Omotta!