Heyya i need some serious slow burn with uhm some spice hihi please recommend me someee

No moral - as for the spicy scenes, wait for R18 version to be uploaded, currently there's R15 version available
https://www.mangago.me/read-manga/no_moral/

Song of Reverberation
https://www.mangago.me/read-manga/song_of_reverberation/

Payback
https://www.mangago.me/read-manga/payback_1/

Turning
https://www.mangago.me/read-manga/turning/

Rainbow city (SA in chap 3, best to skip)
The foul

Omg thank youu!!