Yakuza from Another World 3

I was torn from my home world in order to carry out revenge. The choice was simple: either die under the feet of the bandits, or defeat them. I won, but I ended up getting pulled into another criminal group. What’s the problem? I’m not used to anything else—I was a hired killer even in my previous life… Though here I’m also a schoolboy, and that’s even better—who would think bad of an awkward oaf?