Didn't get the pickup in the end

I'm a casual player so I don't spend money, and I haven't even cleared Chapter 3 yet from event leveling. I only did about 50 pulls on Taroutachi's pickup, but I only got two Ichimonji (older brother) rares. I'm crying because I have no luck with Wakizashi and Oomono characters. (Oodachi, Spear, Naginata enthusiast) Please come to my ship soon... Emakimori is waiting...