If you haven’t read Dear Benjamin and it’s sequel I highly recommend.
https://www.mangago.me/read-manga/ore_no_kirai_na_senpai/
https://www.mangago.me/read-manga/asatte_ni_kiss/
https://www.mangago.me/read-manga/dear_signal/
https://www.mangago.me/read-manga/hishakaishindo/
https://www.mangago.me/read-manga/karasugaoka_don_t_be_shy/
https://www.mangago.me/read-manga/i_seriously_can_t_believe_you/
https://www.mangago.me/read-manga/hoshi_to_harinezumi/
https://www.mangago.me/read-manga/mihanada_pectolite/
https://www.mangago.me/read-manga/gunjou_no_subete/
https://www.mangago.me/read-manga/golden_sparkle/
https://www.mangago.me/read-manga/hige_to_suzu_to_shabondama/
https://www.mangago.me/read-manga/dekoboko_sugar_days/
https://www.mangago.me/read-manga/blue_lust/
https://www.mangago.me/read-manga/konosaki_wa_futarikiride/
https://www.mangago.me/read-manga/doukyuusei_nakamura_asumiko/
https://www.mangago.me/read-manga/hidamari_no_orange/
https://www.mangago.me/read-manga/hetakuso_love_step/
https://www.mangago.me/read-manga/tonari_no_metaller_san/
https://www.mangago.me/read-manga/hate_no_kouya_de_vacances_wo/
you can find some here
https://www.mangago.me/home/mangalist/1455680/?filter=&page=1
somebody please recommend me underrated yaoi preferably Japanese manga (￣ε(#￣)Σ