which weapon shud i use on jinwoo

Guys i have a a4 truth kasaka, a2 demon dagger thing, tears of thetis, plum sword, the dragon stick thing a2, a1 moonshadow, and a2 shadow scythe. I keep getting shadow scythe on my pulls and im confused. rn im using truth kasaka and the demon daggers and keep switching between truth kasaka and the dragon stick. which one should i invest in???