Best Mangas/manghwa involving a boy gangleader falling in love.

Top picks
Honggane
Boarding house of hunks
Delinquent lessons
Wait wolf
Boy of the female wolf
Dedicated to roses
Love in a Mask
Hana yori dango
Hana to akuma
AAA
Hot blooded woman (girl is the gangleader)
TOKYO CRAZY PARADISE
Love like crazy