Renaishiki ga tokenai sono wake (Daria Comics)

[Machine Translation] The son of his first love is making a pass at him! Gyoshin, a 35-year-old gay man, has to return to the countryside for a reason. One day at a bar, a cool, handsome guy named SATO hits on him and pushes him down, only to find out that he is a high school student 17 years younger than him! She lets him go home without doing anything, but the next day she meets him again at the cram school where she works. She also finds out that he is the son of the man she first fell in love with...? Gyoshin shuns him as someone he is not in love with, but when he repeatedly and earnestly confesses that he has always loved him, he is gradually moved by his feelings. ......

初恋の人の息子に言い寄られています！35歳の冴えないゲイ・行真は、訳あって田舎へ戻ることに。ある日、バーで颯というクールなイケメンに口説かれ押し倒された直後、彼が17歳も年下の高校生と判明!!何もせず帰らせるが、翌日勤め先の塾でまさかの再会。さらに、初恋の男の息子だと分かり――!?恋愛対象外だと颯を遠ざける行真だが、「昔から好きだった」と何度も真剣に告白される度、次第に心動かされ……。