|Boil Release: Flower Repentance Technique|
|Rōmaji||Futton: Kazan no Jutsu|
|English games||Vapour Style: Sinful Lotus Jutsu|
|Game||Naruto Shippūden: Ultimate Ninja Impact|
|Classification||Kekkei Genkai, Ninjutsu|
Mei manipulates her chakra to create vapour to be released from the ground that she then causes them to create corrosive explosions at different ranges. The corrosiveness of the technique merely can cause some severe damage to the body of the target but do not have full acid properties that could melt them instantly. She uses this technique after she mishears Ao.
- When written as 火山, "kazan" means "volcano".