Tatarasuna Mikage Surface won't kill me anymore..

Just do the quest chain of Tatara Tales, a new quest spawns every day. After clearing this, a new world quest "The Seventh Samurai" can be triggered here: https://youtu.be/oY28QReXckE
Also, don't forget to check out the 26 MOST SNEAKY CHEST throughout Inazuma: https://youtu.be/XNATmg7J2-o

TatarasunaMikageSurface