Mahiro and the Uneventful Holiday

Mahiro and the Uneventful Holiday (まひろとなんでもない休日, Mahiro To Nan Demonai Kyūjitsu) is a special chapter of Onimai: I'm Now Your Sister!. It was originally published in EX Special which was released on December 31, 2018.

Summary
We get a glimpse into Mahiro's daily routine.

Plot
It's 10:04 AM, with a note that the day starts late for Mahiro Oyama. She gets out of bed slowly and groans. After yawning, she notes that she has to pee.

After doing so, she exits the bathroom and notes with relief that she feels better. As she walks down the stairs, she notes that by now she's totally used to going to the bathroom, but only first thing in the morning. She starts to wonder when her "comrade" is going to come back.

In the kitchen, Mihari greets Mahiro. She says that it's almost noon, but still asks if she wants some breakfast. She says that they have bananas, but the sight of it caused Mahiro to blush furiously. She notes in bliss that she sees her "comrade" everywhere she goes, but Mihari peels the banana wondering what Mahiro means. Mihari puts a large slice of the banana in her mouth to eat it, which causes Mahiro to shriek over how sexual this appears. She grips her private area, noting that this is making her feel phantom pains for her "comrade". Mihari is still clueless about what Mahiro means.

At 1:00 PM, Mahiro changes into a long-sleeved dress with black tights and swishes the skirt a bit as she checks herself out. Sitting on the floor, she notes that she figured dresses are comfy, but that she's still not sure about going out in one though. She puts a cartriage into her game system and notes though that that's not important for the Famicom warrior. Smiling in delight, she notes that since she had lunch as well, it's going to be retro games until dark.

Mihari suddenly appears behind Mahiro and criticizes her for playing games again. Mahiro is shocked and wonders when Mihari came into her room. Mihari tells Mahiro to go outside and move sometimes, but Mahiro laughs at this and tells Mihari that she's good at jokes.

Smiling devilishly, Mihari suggests that they both play a round of the game, and if she [Mihari] wins, she [Mahiro] will go out shopping with her. Mahiro is confused, but decides that Mihari must be mocking her. In that case, she agrees saying that she'll win against Mihari no matter what. She begins to ask how many rounds they are going to play, but Mihari starts the game before Mahiro can finish. Mahiro soon becomes surprised and overwhelmed by Mihari's playing, and loses when Mihari K.O.'s her character.

By 3:00 PM, as promised, Mihari drags Mahiro out with her shopping at Neon. Mahiro cowers behind Mihari and grips her left arm, afraid of the large crowds in the mall. Mihari asks Mahiro if she remembers this place, as they previously came there to see a movie with Kaede. Mahiro cheers up upon remembering that day, and asks if Kaede is actually here today as well. Mihari says that she actually just sent her a text and said that she's on a field trip right now. Mahiro gets depressed again as her hopes are dashed. Mihari notes that she wishes she could've gone on that trip with her, as that's the problem with skipping grades. Upon hearing this, Mahiro begins to wonder how much Mihari sacrificed in her pursuit to make her a better person.

Mahiro tells Mihari that she can travel all she wants now, and suggest that she invite Kaede with her. Mihari puts her hand over her mouth in shock and asks Mahiro if she's trying to cheer her up. Mahiro cringes and denies it, but Mihari just laughs at that. She says that it is fine, as she gets to go shopping with her onii-chan instead, hugging Mahiro from behind and caqsuing her to complain. She suggest that they look at some light clothes, and then go home after and get dinner fixed up. Mahiro sighs with relief and hopes that that's how it goes.

At 7:00 PM, Mihari comes into Mahiro's room and tells her to wake up. Mahiro wakes up confused, and remembers that she fell asleep as soon as they got home. Mihari remarks that Mahiro slept like a baby and tells her that dinner is ready. Mahiro perks up upon hearing that there's food. Eating at the table with a smile on her face, Mahiro notes that dinner is even better after working, calling it one of the joys of labor. Mihari is shocked that Mahiro is the one saying that, and asks her if she wants to try working some more. Mahiro just says "No thank you" to that.

By 9:00 PM, Mahiro is sitting on a chair in her room reading and humming a tune to herself. She notes that she is doing some light reading after dinner, calling herself a bookworm in her study. In reality though, she's reading manga. As she smirks and laughs at what she's reading, Mihari comes in to tell her that the bath is open. Mahiro says that she'll go in later, but Mihari won't have it and drags Mahiro from behind telling her to come on. Mahiro calls Mihari a brute for doing this.

In the bath, Mahiro gets angry, wondering who Mihari thinks she is; their mother. Despite that, when she gets out she notes that it hit the spot and asks Mihari to help her dry her hair, which Mihari is happy to do. As Mihari drys Mahiro's hair, she notes that this can't be helped. Mahiro thinks to herself that it is because she gets mad with her when she leaves it damp. Mahiro suddebly cries out that its way too long and wonders if she should just cut it herself. Mihari bursts into tears and tells her not to, insisting that she'll take really good care of it. Mahiro is surprised by this reaction and wonders what Mihari's obsession with hair is.

By midnight, Mahiro sits at her computer and smiles with anticipation. She notes that now the real night starts. She calls this period "Real Gamer Hours", noting that its a fierce period where the casuals begin to decrease. Mihari knocks on Mahiro's door and tells her that she's going to bed, while Mahiro also notes at this time that the ladies are sleeping.

By 1:00 AM, Mahiro notes in delight that she's got the field boss to herself.

By 2:00 AM, Mahiro gets frustrated over there being nothing but bots.

By 3:00 AM, Mahiro starts to rub her eyes and notes that she's getting tired. She decides to call it a night and climbs into bed telling herself goodnight. As she settles into bed with a smile on her face, she abruptly opens her eyes and realizes that she can't sleep at all because she napped during the afternoon. She goes back to her computer and decides to do this some more until she gets sleepy.

By 4:00 AM she's still going at it. By 5:00 AM, she's starting to pass out. By some unknown hour in the AM, she finally feels sleepy enough and gets back into bed before falling asleep.

Some unknown number of hours later, Mahiro is still in bed when her phone starts to ring with a call from Mihari. Mahiro struggles to get up and reaches for the phone. Answering it, Mihari asks Mahiro if she's still asleep, and realizes that there's no helping it. Mahiro hears from Mihari that college just let out and that she'll be some this evening. Mahiro tells her to take care, and Mihari says that she'll see her later before hanging up.

Mahiro looks at the clock on her phone, and realizes that she slept in to 3:00 PM. A note reiterates that Mahiro's mornings start late.

When Mihari gets home later, she becomes shocked that when she called it wasn't just a nap, as she left Mahiro that morning without waking her up. Mahiro tells Mihari that she accidently stayed up all night.

Characters

 * Mahiro Oyama
 * Mihari Oyama

Trivia

 * According to Nekotofu, the events of this chapter, it's successor, and the corresponding Drama CD take place after the events of "Mahiro the Own-Home Security Guard", and "Mahiro Helps Out". It also takes place before the events of "Mahiro and the Middle Schoolers" as Mahiro has not gone back to middle school yet as evidenced by her late night routines.
 * Due to this chapter being published exclusively in EX Special, it has not received an official English translation or release, though an English fan translation is available for purchase at DLSite alongside the Japanese release.
 * Mihari references when the came to the Neon mall to see My Name in "Mahiro and the Girls' Day Out" and "Mahiro and Kaede's Secret".
 * Mahiro appears to reference when Mihari criticized her for leaving her hair damp in "Mahiro's Night Alone", implying that the chapter takes place after the events of that chapter. It could also reference the first time she dried it in "Mahiro and the Secret Garden".