It won't. You can check the second half items in event details. Most expensive is clearing 11x each ampies.Got the girl+all blooms+4*5 manyus+ring+gacha seeds and still got ~3k event stuff to burn on nothing. On 2nd day, with 2 weeks left .... Hopefully the 2nd part will cost WAY more for the 3 items remaining.
I think I have enough to buy everything, the ampys, manyu and accessories cost under 10k total and I have 17k, I guess I'll kill this last pest for the 10 lifegems and quit here at number 15. I doubt anyone but new people want all those mid grade equipment gacha seeds.
It really is something to waste 400 stamina because your allies is so proud with their 700ish speed.
This is exactly why I keep my helper team at 400 speed.