The initial plan was for Highchool of the Dead to be added in this book. It would have served to be the final arch after Yuito get all of his harem girls.
Like he had done in the past with slash resistance training, he used his massive cursed energy pool to amplify the temperature of the lava, making him nigh-immune to all forms of fire.
Disc: HrPrTeam (SugmaMaleGamer joined the discord so I will be making a Kenjussy Omake at the end of the culling games. Join if you want more brainrot.)