Responses
https://www.mangago.zone/read-manga/seven_days/
https://www.mangago.zone/read-manga/boy_meets_maria/
https://www.mangago.zone/read-manga/doukyuusei_nakamura_asumiko/
https://www.mangago.zone/read-manga/kimi_wa_natsu_no_naka/
https://www.mangago.zone/read-manga/the_two_lions/
https://www.mangago.zone/read-manga/karasugaoka_don_t_be_shy/
https://www.mangago.zone/read-manga/blue_blue_blue/
https://www.mangago.zone/read-manga/bokura_no_shokutaku/
https://www.mangago.zone/read-manga/kamisama_to_toberanai_tsukai/
https://www.mangago.zone/read-manga/old_fashioned_cupcake/
Very short under 20 chapter or below manga shounen ai of yaoi only had maximum of 3 chapter smut