 If you liked
Fukashigi Philia
|
 ...then you might like
ib: Instant Bullet
|
Both are action manga that deal heavily with psychological aspects especially for the protagonists. Both protagonists have had to go through their fair share of struggles (and more). However, in Fukashigi Philia, the MC is good (though he sometimes loses control of himself) while in Instant Bullet, the MC is actually the villain (as he refers to himself).