Kira is very prone to mental break downs when it comes to certain things. That's why Daisuke always uses that against her in battles.
When one of her breakdowns occurs, she usually shuts completely down, not interacting with anyone or anything. Sometimes she'll just start randomly crying.
Depending on what made her crack up determines how long she's like that. It can go from hours, to days, to weeks, to even months.
I believe her longest break down was a month and a half.
