Any manga with a plain uke?
https://www.mangago.me/read-manga/after_shoot_snack/
i think this one is plain-ish
Any manga about warriors or knights falling in love, kind of like heroic type of BL romance?
https://www.mangago.me/read-manga/the_fallen_duke_the_knight_who_hated_him/
Is good not boring i recomend it
Your fate is sealed XD