Ishijijii

Ishiji is a forbidden Youkai that has been sealed away due to the potentially horrific effects of his curse. In his usual state, Ishiji looks like a small shriveled old man of no particular interest, however this state can radically change depending on his emotions: if he feels particularly sad and starts crying, his size and mass increases. Though the process is not too sudden, there is no known upper limit to this effect. However, the effect can be reversed if Ishiji suddenly feels joy, such as from sweets until he returns to his former size.

After the failure of his previous plans, Xavier sends his minions to retrieve him and make him cry of the Tenma Bridge, making his size increase until the bridge collapses under him, destroying the entire continent of JAPAN. To ensure he keeps crying and growing over the next few days, the monsters under Xavier would viciously beat up Ishiji until Rance's army intervened and returned the Youkai to normal.