Mahiro's Cool Head

Mahiro's Cool Head (まひろのクールヘッド, Mahiro No Kūruheddo) is Chapter 54.5 of Onimai: I'm Now Your Sister!.

Summary
Mahiro and Momiji have both wet themselves after being scared by Nayuta and try to find something else to change into.

Plot
Momiji is in tears over having wet herself after thinking that Nayuta was a ghost. She can't believe that she did that even though she's in junior high now. Mahiro tries to calm her down, saying that there's no use crying over it and tells her to forget it. Nayuta is interested in Mahiro's reaction.

Nayuta tells Momiji that she does have a change of underwear that she can use. Momiji wonders why Nayuta has that, but accepts the offer and thanks her. Nayuta says that it's no problem as she feels bad for causing all this.

As Momiji goes to change, Mahiro reveals to Nayuta that she also wet herself. Nayuta is amazed that Mahiro has already bounced back from it, and Mahiro admits that she is used to it by now.

Nayuta remarks that this is no good, as she only has the one extra pair, deciding that she'll have to give up her own again. Momiji is confused by the phrase "again", but Mahiro stops Nayuta from taking off her underwear, saying that it's okay.

In the end, Mahiro and Momiji change into their gym clothes. Momiji is glad that they had their gym clothes with them, and Mahiro admits that with these shorts it's okay to go commando for a bit. Mahiro thinks to herself that it is kind of naughty and perverse, something having awakened inside her.

Later at home, Mihari is shocked that Mahiro wet herself as her uniform is soaked.

Characters

 * Mahiro Oyama
 * Mihari Oyama
 * Momiji Hozuki
 * Nayuta Tenkawa

Trivia

 * The events of this chapter take place during the events of the previous chapter "Mahiro and the After-School Fright", after Nayuta discovers the Mahiro and Momiji in the bathroom and before Mihari picks them up. It manages to reveal why they changed into their gym clothes in said chapter.
 * Mahiro references how she's been no longer bothered by wetting herself since "Mahiro's Big Secret (Part 1)".