Due to his scary face, Shougo has been alone since entering university. But unexpected events lead him to become close with Hina, from the same university. Shougo, elated at the fact he's become friends with the cool and kind Hina, finds out that Hina breaks out into hives when people treat him with affection—a "love allergy"?!

(Source: MU)

From Hoshikuzuu Scans:

While searching the forests for a sage, Achille stumbles upon a beautiful boy named Raphie. While he is mesmerized by Raphie’s mysterious charm, Achille feels a sense of familiarity. Who exactly is Raphie? This is a tale of pure and eternal love.

From Hoshikuzuu Scans:

Maki, a popular and good-looking dude, but a virgin. Despite his playboy looks, he believes that sex should be done with someone you like. A pure-hearted teenage boy that you rarely see nowadays. And by some accident, his classmate Miyashita found out about him being a virgin. In exchange for his silence, Maki is threatened into going out with him. He reluctantly accepts, but later discovers that Miyashita is a huge sadist.

From Lewd4Yaoi Scans:

Chiaki Asami was transferred to Shuurin High School into the Suzuka Dorm, and there Nachi Kirishima who had a beautiful face like a model is to be his roommate. When he’s just getting accustomed to dormitory life, a welcome party for Chiaki suggested by Nachi is carried out. One night, Chiaki encounters lewd play between Nachi, Shinobu, and Haru…