A Terrified Teacher at Ghoul School!, Vol. 17

Thanks to Tamao's supernatural powers, Seimei and the gang find themselves transported over a hundred years back in time! There, Hatanaka is faced with the vast gap between his and his future wife Ibara's lifespans, prompting him to declare that he's giving up on her for good. Can this rift be repaired before everyone returns to their proper time...?