How to get Murasama early?

mission: get murasama

Muramasa (weapon), Final Fantasy Wiki

Murasama or Yamato? #murasama #metalgearrisingrevengeance #mgrr #yamat

Blade inscribed by Muramasa, 鮫皮研出鞘大小拵 Blade and Mounting for a Long Sword (Katana), Japanese

Guide: How to Complete Absolutely Everything in Muramasa Rebirth

mission: get murasama

You Can Use The Murasama EARLY in Calamity!

new muramasa terraria｜TikTok Search

I wanted a mod that added a complete murasama to the game(sort of a mix of calamity and the stars above) and I found these mods but I have no clue of

mission: get murasama

How to get Murasama early?