Ironbun Rules: -> Erina gains No EN -> Once health is lost, it cannot be regained (All regen mechanics disabled) -> All items obtained will immediately be level 3. -> One donut is earned per boss defeated -> One carrot cake is earned per major boss defeated (Noah 1, Noah 2, Miru, Erinoah, Miriam, Rumi) -> All Save points and auto save points are removed