Help

Looking for yaoi where the uke is a highschooler and in love with his friend. He goes to the gay district to lose his virginity. There he meets a college guy and has sex with him. Later he was with his friends(including the one he is in love with) and the college guy came to give him his SD card back, which he forgot at his place(I think the SD card contains a story that the uke wrote). His friends ask him who the older guy is and the uke confesses that he is gay. Later he went out with the college guy. When he grew up he was a teacher and started cheating on the seme with a student.
The friend the uke was in love also became gay.
I think there was a foursome with 3 men and a women.