Hajime to Masamune (to Oppai)

Overview

With a growing interest in matters of sex, high schooler Masamune has developed a desire to fondle tits like his life depends on it. Unfortunately for him, he only has access to the burly pecs of his childhood friend, Hajime. He doesn't mind, though, and gives them a nice, firm squeeze. Hajime's chest is hard, muscular and without a hint of softness, but fondling it still makes Masamune feel all tingly! Masamune might just be in love with Hajime('s tits)! A handsome, silent type and an airheaded cutie! Two childhood friends brought together by a love for boobs! (Source: Renta!) Note: Includes one extra chapter.

Source: AniList