Zutazuta no Ude ni Kiss

One day, Hitomi, a college student with a communication disorder, falls in love at first sight with Chigasaki, a beautiful younger man who is just his taste, who is visiting the university. However, he is unable to find the courage to speak to him, and when their eyes meet, Chigasaki is scared of him, and he ends up heartbroken. Two years later, however, he is unable to give up on his feelings and sneaks into the welcome party for new students at the club to which Chigasaki belongs. Hitomi is a bit of a floater, but when a drunken Chigasaki bites him on his arm with scars...! A fetish-erotic love story between a S-ish baby-faced hottie and a single-minded minefield man is born!

(Source: Tokyo Mangasha, translated)