Onii-chan Is Done For! - Ch. 102 - Mahiro and a Technological Nightmare

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Feb 7, 2020
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Welcome back to the new and improved official unofficial onimai piss chart. I decided that a recount is in order (and i wanted to re-read) so i was extra thorough and marked each chapter with an explination of what happens. I have no life.

Mahiro - (A8) (B5)

Kaede - (A0) (B1)

Momiji - (A3) (B2)

Mihari - (A1) (B1)

Asahi - (A0) (B4)

Minato - (A0) (B1) (Coom1)



Chapter breakdown

A* means an (A)ccident occured

B* means used the (B)athroom

Ch1.5- Mahiro (B)
Mahiro misses the raid to go to the bathroom

Ch7- Kaede (B)
Mahiro walks in on kaede, this is also the only time, so far, that kaede is shown to use the bathroom

Ch9.5 - Mahiro (A)
Mahiro experienced the long line of the womens toilets at the cinema, and pissed himself... the first of many

Ch21 - Mahiro (A), Miyo (B), Asahi (B), Momiji (B)
Mahiro refused to go to the toilet with everyone and suffered the consequences

Ch28 & 28.1- Momiji (A)
Momiji thought that Mahiro was the pillow flipper ghost is wet herself in fear. Mahiro took the blame to save her embarrassment

Ch35.6- mihari (A)
Mihari and Mahiro swap bodies and Mihari doesn't want him using the bathroom. When they switched back, Mihari pissed herself and took blame for it so it will be listed under her.

Ch 35- Mahiro (B), Asahi (B)
For mahiro's late birthday present he got a anything you want ticket. After messing around with it, he mentions he needs the toilet, to which Asahi helps by going in his place. The chapter ends ambiguously, unclear if mahiro made it or not, so im going to assume he made it to the bathroom.

Ch39- Mahiro (A)
Ok actually whats with all of the piss these last couple of chapters! Mahiro fails to make it to the bathroom as she doesn't want to go andask the teacher during a school assembly, luckly Asahi shouts out that Mahiro needs the bathroom for her. Unfortunately, she pissed herself anyway. Also, Nayuta introduction, pog.

Ch 40.99- Asahi (B)
Another piss chapter... An illistration of her on the toilet struggling while saying "it won't come out". No im not kidding, check for yourself. Despite questionable cannoninity im counting it cause its a weird illustration.

Ch54- Momiji (A), Mahiro (A)
They both end up staying up late at the school and get jumpscared by Nayuta. The pee themselves out of fear

Ch66- Momiji (A)
12 chapters later huh, the author must have gotten bored with piss for a bit. Momiji goes through a haunted house during the school festival. She handled it ok until Asahi scared her.

Ch71- Asahi (B?)
Ah yes, the chapter in which mahiro makes CP (not cyberpunk). Anyway, in Japanese touching up is pronounced moru, this can also mean mol (unit of measurement) and peeing yourself. Asahi states "gotta go to the toilet". I am going to asume she went to the bathroom, however it is very vague.

Ch72- Mahiro(A)
He pissed himself. Thats all. Theres no in universe reason for it. The reason for this is so we can get a Nayuta (the goat) chapter.

Ch72.9-Mahiro (B)
2.9 chapters in a row... wow. Mahiro rushes to the bathroom as teach drags the class on.

Ch74- Mihari (B)
A power outage strikes and Mahiro runs to comfort Mihari, but she is on the toilet.

Ch74.5- Momiji (?)
She mentions a different kind of lightning strike after getting scared but its very ambiguous so i won't count it

Ch76- Mahiro (B)
Mahiro gets his best friend back but needs to go to the bathroom. This also helps hide the reappearance if his old friend.

83.9- Minato (B)
Wow a boy for once. Although he was crossdressing.

85- Mahiro (A)
I have no words for this tragedy... letting your own mother and sister get a front row seat to you pissing... without a single layer of cloth hiding it...

86.9- Minato (C)
Not piss but He coomed himself from his sisters shampoo smell and i think that deserves a mark

Ch98.5 - Mahiro (A)
Mahiro pissed himself again... there is no context or bit, he just did it...

Ch99- Mahiro (A)
Mahiro pissed himself in the car due to a skill issue

Ch102- Mahiro (B)
Mahiro gets observed by miharirobo and gets caught on the toilet



I need a life... see you next time

Ps- this is all lies because girls dont pee
 
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Dex-chan lover
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Mar 25, 2023
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Welcome back to the onimai piss counter. I am working on an updated version that is more thorough. It is very close to being finished and will be posted whether or not there is piss.

Mahiro - 8 + (*5)

Keade - 0 + (*1)

Momiji - 4? + (*2)

Mihari - 1 + (*1)

Asahi - 0 + (*2)

Minato - 1 for being a coomer

*goes to the bathroom
For one of the Asahi counts, chapter 36, she goes but doesn't achieve anything per the bonus illustration for that chapter.
 
Dex-chan lover
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Mar 25, 2023
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...How?

An ai robot seems small time versus what Mihari has created drug-wise.
Mihari learns programming and makes an AI robot in one evening and has all the parts to make said robot in the same evening
I dunno maybe that, the meta commentary of Mahiro saying all Mihari does is get annoyed, and it just stretches one bad joke thin. I can suspend my disbelief for the drug(s), its what gets the story going after all and continues it.
 
Group Leader
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May 21, 2023
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I dunno maybe that, the meta commentary of Mahiro saying all Mihari does is get annoyed, and it just stretches one bad joke thin. I can suspend my disbelief for the drug(s), its what gets the story going after all and continues it.
It's for the sake of pacing. It's hardly a serious manga, you already have a suspicious college lab making drugs that turn people invisible and into catgirls on a whim. It would be silly to take a page or two out of an already limited amount per chapter to show Mihari spending a longer period of time learning how to make a robot, shopping for parts, etc and lining it all up logically for the next weekend off when the humor is in Mahiro waking up the very next morning only to get jumpscared by a weird robot of his sister and it's gone by the end of the chapter.
 
Dex-chan lover
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Mar 25, 2023
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It's hardly a serious manga, you already have a suspicious college lab making drugs that turn people invisible and into catgirls on a whim.
Yes and I can suspend my disbelief for that, have to for the series to even work then if there's a drug that can make a man a teenage girl it makes sense the other drugs exist. For me this goes too far outside the realm of what was previously established possible for a joke that will never ever be mentioned again, sort of like an anthology chapter; hopefully it isn't a sign of things to come that Neko is really spinning his wheels, I'll wait for the next chapter. It's just a stupid, bad chapter.
 
Dex-chan lover
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Feb 14, 2025
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It's for the sake of pacing. It's hardly a serious manga, you already have a suspicious college lab making drugs that turn people invisible and into catgirls on a whim. It would be silly to take a page or two out of an already limited amount per chapter to show Mihari spending a longer period of time learning how to make a robot, shopping for parts, etc and lining it all up logically for the next weekend off when the humor is in Mahiro waking up the very next morning only to get jumpscared by a weird robot of his sister and it's gone by the end of the chapter.
This person must never watch series like F&F ...where even children as age of 5 can order and build item ....not mention the order will arrive within 7 min after ordering
 
Double-page supporter
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Nov 20, 2018
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Boomer Mahiro right out the gate
Asahi's good at handling wood
Mihari can now learn to build a sophisticated robot in one night. This can't be good for Mahiro's self-esteem, especially if he struggles to build a simple one at school
"You know how to please people" Mahiro, where is this thought heading...
Mihari getting jealous that Onii-chan likes Robo Mihari more. My fanfic mind wants to draw a parallel to how she seems (from Mahiro's POV) to like Mahiro more when he's a girl than a boy
Asahi's brother is no longer safe
 

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