Need Cu Alter with Beginning of the Journey CE for Grinding

Hello, I'm fairly new in this game and already accumulated more than 550AP since yesterday. I already ascended some of my servants to cope with grinding, so i don't really need support with damage bonus or whatever CE as long as it's Max Leveled Cu Alter.

And i am pure F2P player, so i really need those support with Beginning of the Journey so i can prepare for Prisma Causeway Events (Don't wanna spend any FP except for important events only)

I'm going to use it all the time maybe, if anyone has it please reply (i'm gonna grind a lot today :))

Sorry for bad english