I'm going to level her up before selling to fill up the monster book entry. Update: I already sold her but discovered much later that she can be used in red teams due to her killer awakenings like for Awoken Cao Cao! Definitely worth keeping if you roll one! (Sources: https://γγΊγγ©.gamewith.jp/article/show/34112, https://game8.jp/archives/155165)
Saito was my roll the first time around. His split UEVO is definitely more powerful than the first one as it is no longer reliant on actives while still maintaining a high damage output. His new UEVO pairs well with Awoken Ichigo and Kaioh (Fist of North Star), I'm just unable to find friend leaders easily from refreshing the stranger lists so I'll have to go to pazudora-friend.com if I'm really interested in using Saito this way.
I've also seen the newest