I thought that was common knowledge; sorry for all my own allies, but I usually rely on others more than them

Regarding HP-Utility for these Union Events, assuming we've completely leveled up our MLB Eidolons and have a couple SSR Defenders in the grid, most SR-Ranked Kami are probably experiencing an HP increase of 3000 (from 2-20% HP Eidolons & SSR Defenders) + 5500 (Union Buff), for a total of 14k HP. If we swapped our current Eidolons for those magical +40% HP ones, we'd be looking at 16k HP.

SSR-Ranked Kami will probably be looking at end totals of 16k & 19k HP, while R-Ranked should be at 13k & 15k HP. So long as you have Andromeda + 1 Healer, Autorunning up to Lv130 Expert is quite feasible.