modern romance manhwa could be bl or straight

Straight

https://www.mangago.zone/read-manga/honey_lemon_soda/

https://www.mangago.zone/read-manga/quoth_the_boy/

https://www.mangago.zone/read-manga/transparent_cohabitation/

https://www.mangago.zone/read-manga/we_did_not_date/

https://www.mangago.zone/read-manga/kuki_ga_yomeru_shunnyushain_to_buaiso_na_sempai_no_hanashi/

https://www.mangago.zone/read-manga/kinoshita_kyoudai_wa_tomaranai/

https://www.mangago.zone/read-manga/kono_setsugen_de_kimi_ga_zutto_waratte_irareru_you_ni/

https://www.mangago.zone/read-manga/yubisaki_to_renren/

https://www.mangago.zone/read-manga/koori_zokusei_danshi_to_cool_na_douryo_joshi/

https://www.mangago.zone/read-manga/match_made_in_heaven_by_chance/

https://www.mangago.zone/read-manga/another_s_love_story/

https://www.mangago.zone/read-manga/i_don_t_feel_like_doing_anything/

https://www.mangago.zone/read-manga/veil/

https://www.mangago.zone/read-manga/uruwashi_no_yoi_no_tsuki/

https://www.mangago.zone/read-manga/kawaii_nante_kiitenai/

https://www.mangago.zone/read-manga/the_fragrant_flower_blooms_with_dignity/

https://www.mangago.zone/read-manga/i_won_t_fall_for_him_just_because_of_his_face/

https://www.mangago.zone/read-manga/sekai_de_ichiban_itaranu_koi/

https://www.mangago.zone/read-manga/kingyoya_san_no_karisome_fuufu/

https://www.mangago.zone/read-manga/when_sato_kun_died/

I read this waaayyy back, remember liking it, just recalled it cause i saw that they made an anime about something just a little similar to it tho not this one It's completed, straight. Hope u try it if u haven't read it. https://www.mangago.zone/read-manga/live_or_not/