Koisuru Bicchi-kun
Ch.1-3: Assistant Sugiura is in a sex friends-like relationship with mangaka Komatsu, whose promiscuity irritates Sugiura. Now, Sugiura's trying to convince himself he's not in love Ch.4: Hirosaki suddenly starts being followed by a floating heart, but Shintarou shows up asking Hirosaki to return his heart Ch.5: A shy yakuza young master who loves fairy tales and the beast-like yakuza who wants to be his prince Ch.6: Sawaki has trouble finding the words to answer popular Yoshino's confession
Harukawakun To Yukisensei No Fudanshi Jijo.
Ch.1-4.5: Fudanshi Harukawa's the assistant of his favorite BL mangaka, Fuyuki, a middle-aged man. Despite both men being straight, Harukawa falls for Fuyuki. When Fuyuki asks Harukawa try gay sex with him, Harukawa refuses, until finding out their feelings are the same Ch.5-6: Sed, an incubus who can only seduce men, is caught by exorcist Rodi and gets forcibly reverted to his true, middle-aged form. After seeing this form, Rodi makes a deal to not to exorcise Sed, if Sed has sex with him
Gouin Sakka To Makeinu No Hatsukoi