 If you liked
Hoshi no Samidare
|
 ...then you might like
Reincarnation no Kaben
|
May contain spoilers.
Both MCs have a kind of twisted personality. They start by not understanding themselves that much, and go on growing up.
In both series there is a main conflict between two factions, with the MC acting to his own benefit while helping the "good" side.
Reincarnation no Kaben has a more complex plot, with some major plot points being from the past, while Hoshi no Samidare has bigger difference between the two factions and action is more direct, but the overall feeling is pretty similar.
Also, there's the "Awesome Big Bro" character for both MCs that drives them to become stronger.