Manga ID help please.

[nihonbashi]

Hi there!
I am trying to find a manga I was once reading not long ago, forgot the title and to bookmark it

So here goes:

It is a fantasy manga about a young guy, his dream is to become a soldier so he goes to a medieval city to apply. He is insanely OP but he thinks he is pretty weak, since his village is full of retired heroes or something. I also remember him meeting a young swordswoman nicknamed The Belt Princess, since she has a cursed belt wrapped around her head and she can´t take it off herself.

Thanks for reading and for your help!

 

[El Psy Kongroo]

Is it this by any chance? Tatoeba Last Dungeon Mae no Mura no Shounen ga Joban no Machi de Kurasu Youna Monogatari

 

[nihonbashi]

Yeah, that´s the one!
Thanks a lot!