Malevolent Spirits: Mononogatari Vol. 12 (manga)

The battle with the paper umbrellas turns drastic when they reveal their trump card - the powerful Saenome who were sent to deal with them have all been devoured, with the umbrellas possessing their bodies. Forced to fight his own grandfather, Hyoma nonetheless gives everything he’s got to protect Botan. But as more and more umbrellas join the fray, his odds of winning, or even coming out of the fight alive, dwindle.

Meanwhile, Botan’s been holding on to a secret that could turn the tide of her own struggle with the marebito inside her. Can she confront the truth, or is it too late?