Seems like it has potential, but there's a weird dissonance between the serious attitude and comedic moments that don't fit for me terribly well. These 'redemption' stories tend to go hard on the penance in an almost preachy way sometimes. Rusty actually does seemingly kill the dude in the end so maybe there's hope that there'll be less overall talk-no-jutsu or letting the bad guys constantly go because killing is wrong.
I'm also noticing it's a Spanish series which is cool. Seems there's also a second chapter so I'll check it out once it's translated. Hoping the potential isn't completely wasted.