If you press 1 and 2 it massively increases you health and mana (sorry if that wasn't clear enough). If it's not that then it's a bug.
2 years ago (+1)
Yeah i knew this i used it to regen faster in battle with mini bosses, but for the final boss, he killed me in one hit all the time.
Edit: i can use the 1 and 2 when the yellow jauge is void, and use E to use mana to regen health, i spam the button and i made it, but it’s tight !
2 years ago(+1)
I ended up spamming 1/2/e and had a double knockout with the boss, 10/10 would play again.