What would be like, an ultimate story/quest team build? like, best overall (given that i don't have any limited characters like princesses, summer or new year ones)? i have most of the normal ones already. I have looked at a few tier list but not sure what to trust. Could anyone suggest like, an universal team that i can build and prioritize to clear pve/events/dungeons consistently?

my current team (level 45): front: Akino | middle: Saren, Kokkoro | rear: Maho, Yui

ps. I just got S.Kokkoro from the event, so that's an option too (but i decided to keep normal Kokkoro because she boosts action speed for the team)

i am new to this, only been playing for a few days tbh, any suggestions would be appreciated (i tried to comp my team out of combining tier lists, where characters were in S-SSS tier according to them)