(Haven't read most of these, but hopefully they're what you're looking for)
Nyoudou Onanie Haishinsha
M Dorei no Onii-chan Oboku Senyou Nishi Chaimashita
Dawn of the Dragon
JUNHO’S INFILTRATION QUEST
Don't Pick Up the Soap
Omune-chan no Sainan
Kinou wa Otanosimi Deshitane
The secret life of the demon king
Chikubi ga Yowakute Ikirenai
Monthly Chest
https://www.mangago.me/read-manga/oppai_no_yure_ni_gochuui_kudasai/
https://www.mangago.me/read-manga/akumariage/
https://www.mangago.me/read-manga/kyuushi_ni_issyou_wo_eta_nenjuu_dakedo_nanka_machigattenai/
https://www.mangago.me/read-manga/bitten_by_moonlight/
https://www.mangago.me/read-manga/i_can_hear_it_without_a_microphone/
Do you guys know any hardcore yaoi with big man tiddies? ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄