I remember reading a manga as a kid where the main character had a weapon that transformed into four or five others and killed these horned demons or monsters.
I remember that in the beginning, four or five major heroes sacrificed themselves for him; his weapon was able to transform into all of theirs. I also remember the main hero guy having an arrow tattoo on his forearm that he "activates" to fight off a monster, but he gets turned into light by this.
I also remember there being some sort of monster fighting guild, and the monster fighters getting some sort of mark to indicate how strong they are, claiming bounties, and all that.
The last thing I remember is that one of the major enemies gets his horn cut off, which causes him to explode.
This was all a long time ago, but if anyone knows it, I’d be super thankful to find out what it was.