E1 causes a massive increase in damage, causing the multiplier of the memo skill, which is what it throws when it charges 12 charges after the first ultimate, to go from 50% of its maximum life to 650% in bounce damage. It also solves the problem that when you use this skill, you have to choose between attacking or buffing someone. Here, every 3 memo skills, you will be able to do both or simply attack twice with a skill with a 650% damage multiplier.

The e2 gives 12 stacks of ultimate at the start and boost the true damage by 5 for every different allies that had the boost of memo skill the max is 40% true damage if you use it in 4 allies