Mahiro and Kaede's Secret

Mahiro and Kaede's Secret (まひろとふたりのヒミツ, Mahiro To Futari No Himitsu) is Chapter 9.5 of Onimai: I'm Now Your Sister.

Summary
While seeing the movie with Mihari and Kaede, Mahiro has to pee and encounters the perils of a public woman's restroom.

Plot
Mahiro, Mihari, and Kaede ultimately meet up later to see the movie with Kaede being very excited for it.

As the movie plays Mahiro, who has a drink, starts fidgeting and leaves to use the restroom. As she runs towards it, she notes that for some reason she's had to keep going to the bathroom a lot lately. She notes that it will be her first time using a public restroom since her change, and that she's a little nervous about going into a woman's restroom.

Mahiro then becomes shocked to see a long line for the ladies room and wonders what's up with it. Hearing the other girls talking, Mahiro realizes that another show movie just let out, and that's the reason why so many girls are going all at once. Mahiro struggles to hold it until a stall opens up.

Some time later, Kaede realizes that Mahiro has been gone a long time and decides to go and check on her, worried that something may have happened. She enters into the now empty ladies room and asks Mahiro if she is here. She hears a knocking sound coming from one of the stalls in response.

She open the door to the stall and sees Mahiro standing there trembling, having wet herself. Kaede realizes that Mahiro didn't make it in time.

Mahiro starts crying, but Kaede tells her that its okay as she didn't get any on her dress. She tells Mahiro that she'll buy her some fresh underwear and that they'll keep this their little secret.

Sometime later, having bought some fresh underwear, Mahiro and Kaede return to the theater. Mihari notes they they were both gone awhile, and Kaede says that the bathroom was really crowded. Mahiro silently thanks Kaede for not telling Mihari what happened.

Characters

 * Mahiro Oyama
 * Mihari Oyama
 * Kaede Hozuki

Trivia

 * The Official English Translation of the manga gives the name of this chapter as "Mahiro and Keade's Secret" officially, but lists it is "Mahiro and the Secret" in the table of contents of the first volume.
 * The movie My Name that Mahiro, Mihari, and Kaede see is a parody of the acclaimed 2016 anime file Your Name.