I haven't read that but here highschool BL shounen-ai : https://www.mangago.me/read-manga/for_your_love/
https://www.mangago.me/read-manga/don_t_say_you_love_me/ ( I love this one, shounen-ai)
https://www.mangago.me/read-manga/18_unlimited/ ( to bromance to lovers)
Any other stories like Kisses x Kiss x Kisses?