Curveball and Splitter
https://www.mangago.me/read-manga/a_guilty_victim_player_s_hustle_play/
Misfit On The Florida
https://www.mangago.me/read-manga/misfit_on_the_florida/
Master-Peace
https://www.mangago.me/read-manga/peace_of_god_mgs/
Tale of Ishimi
https://www.mangago.me/read-manga/ishimi_s_story/
No More Eurydice
https://www.mangago.me/read-manga/no_more_eurydice/
Fantasy Love Line
https://www.mangago.me/read-manga/fantasy_love_line/

Are there any new BL/Yaoi manhwa that are ongoing and more than 15 chapters (any genres)