Infamous ex-delinquent 'Leo' x kind student 'Junpei'.
Leo used to be a feared delinquent but just wants to start over again and live a normal life. Junpei offers to be friends with Leo, and Junpei slowly falls in love with Leo.
I like these characters a lot, and the MC being the (probable) seme is really interesting (normally the uke is the MC). Junpei is written very realistically, and I like how Leo doesn't immediately fall for Junpei after he confesses his feelings.
This is a wholesome and addictive BL that you'll probably read again.
The Two Lions