Its the equivalent of Jax E copypasta but for Heathcliff from Limbus Company. Its essentially the character skill name and its description used as a copypasta.
Flame Rooster's Death Defiance [炎鳥不死戦]
In this Encounter, when this unit takes damage that brings their HP down to 0, nullify that damage; then, this unit's HP cannot drop below 1 for the turn.
Then, at the next Turn Start, heal (20 + Burn on self)% HP, and remove all Burn on self (max 49%; once per Encounter)