Dark Gathering, Vol. 6 (manga)

With Keitaro still feeling the effects from his close encounter with the Damned Sergeant and Eiko shaken by her brush with death, the team takes a much-needed break from their spirit hunting. While Keitaro recovers, Eiko and Yayoi set off to face their most terrifying enemy yet - the real estate market! However, as they search for a property where they might safely seal the Graduates, the two discover that perhaps some properties are left abandoned for a reason.