PLEASE HELP!!

PLEASE HELP ME THIS HAS BEEN ON MY MIND FOR LIKE 3 MONTHS STRAIGHT. It's shounen/action btw.

I think the 1st chapter is about introducing the MC as the second son of this family who is in charge of this prosperous village (?) and he is at the wedding of his older brother who is getting married to a girl from another clan.

Halfway through the wedding, this group of bandits (?) attack and begin to kill everyone at the venue and they are looking for this relic (idk what they were looking for tbh) but they are killing people and the older brother tries to protect his wife-to-be and MC. I think he gets stabbed or something and tells them both to run, so the MC and older brother's wife-to-be run downstairs into the basement hiding from the bandits.

While running downstairs I'm pretty sure a bandit cuts MC's arm off and the wife-to-be gets really stressed and tries to help him. In the basement I think there's some statue or something and its of a girl.

The bandits come downstairs and find the MC and the older brother's wife-to-be and attempt to assault her and the MC's blood goes all over the statue.

IDK how, but the statue becomes human ig, and the girl asks the MC to marry her or something and in return she will protect him. He agrees and she grabs both the MC and older brother's wife-to-be and starts to kick the bandits butt.

IK she can control mud or something and she can turn things into stone (?).

I think it only had like 3 chapters or so initially but I really want to read it!!