For those interested on a Bloodtingue build. Skill 50 and Blood 50, Chikage 10(no gems):
PhyAtk 184+103= 287
BloAtk 184+172= 356
Since it has S scaling in Blootingue I guess it could still get bonus up to 60 or 70, but the level up screen doesnt preview Chikage blood bonus but normal damage.