Mao dao zu shi but in a cute way
Akuma-chan wa Momoiro manipulative seme/friend
Does they need to be in relationship?
Well I prefer bl but bromance or shonen ai is also fine
Okey so the peak of enemies to frienemies to lovemies to lovers is actually a trilogy of books "captive prince" I highly recommend it's really well written
Manga:
-Two Empires, The Slave Of The Empire - kinda mid doesn't really have satisfying ending but exists
-Double Trap frienemies quite good
-Cash or Credit same author to doube trap
-Sekaiichi Hatsukoi - old yaoi
-Thirst - enemies to lovers by mistake cute
-To Take An Enemy's Heart and others work of this autor
-The Boundary of Delusion
-Die In My Arms
Bls like bad friend / frienemy ? Similar dynamic