Kill a Remembrance boss daggers, claws, or fists only
This square requires that you defeat one of the bosses that drop a remembrance item using solely weapons from the three categories listed: daggers, claws, fists. These weapons are characterized by requiring close range combat, but on the other hand many of them have inate status effects build-up, making them good options for many bosses.
You cannot use spirit summons, even if they only use daggers, claws, or fists.