Image source: TVアニメ『干物妹!うまるちゃんR』 on Twitter

This isn’t your usual dating sim.

[Note: This article contains mild spoilers for the third episode of Himouto! Umaru-chan R.]

Himouto! Umaru-chan R is about the continuing adventures of Umaru, a young girl who seems perfect on the outside, but a complete otaku slob at home. The top performing student at school, at home, Umaru relies completely on her older brother, Taihei, as she spends her days staying up late playing video games, watching anime, drinking cola, and eating snacks. Despite keeping this dual life a secret from most people, Umaru does have some friends she has allowed to see the otaku side of her—although not many people are aware that the “Perfect” Umaru and “Slob” Umaru are the same person.

Image source: TVアニメ『干物妹!うまるちゃんR』 on Twitter

Episode three starts off with Umaru spending time with a couple such friends. One is Kirie Motoba, Umaru’s classmate, and the other is Alex Tachibana, a coworker of Taihei’s who found a kindred spirit in Umaru. The three start out playing hot new video game together. The episode is mostly about Umaru’s relationship with her friends and how they view each other. The video game itself is for the most part glossed over, with the characters skimming through the text at high speed to the important choices. But, if you take a moment to pause and actually read what’s on the screen, you can find a hilarious gag game that parodies real life romance simulations.

The game’s title, roughly translated is, My Sister is My Girlfriend (Boom). The game is a romance simulation adventure game. Aside from the “(Boom)” it could very much be you average Japanese romance simulation adventure game, but therein lies the gag. After starting a new game, the intro monologue begins.

This is the Kongou Private Academy built on a diamond mine. My father was a fireworks maker in Tokyo, but he was scouted by a mining company and my family moved to the other side of the world to this place.

It seems to start normally enough. But then the crazy sets in.

It’s been three months since I transferred to this school where the sound of dynamite explosions echo.


I managed to overcome the language barrier and came to enjoy my school life with my cheerful schoolmates, but every now and then there are moments when I yearn for my home country.

Seeing them suddenly detonate dynamite in the street or on train tracks and scramble away makes me ache with homesickness.

“I wish I could live in peace and quiet…”

You don’t say…

I was thinking that as I walked down the path of cherry trees in front of the school, when a young girl stood before me.

She also noticed me and gave me a surprised, or rather an unpleasant look.

Her name is “Hikaru.”

She serves as the school council president of Kongou Academy and is gifted in both looks and intellect. Her father is the chief director of the academy and the president of a diamond mining company. You could say he owns this town.

Because my father is imprisoned in the mining company research center, I live in her mansion, or rather, I’m kept there. I’m under surveillance 24 hours a day and live an uncomfortable and inconvenient life.

Hello, crazy.

According to Alex, 50 younger sister characters appear in the game. The funny thing is, as bonkers as the game and its setup are, it’s not so bonkers that I couldn’t see such a game existing in real life. Maybe not the 50 characters, but the whole daily dynamite explosions and imprisoned father…

Image source: TVアニメ『干物妹!うまるちゃんR』 on Twitter

Himouto! Umaru-chan is one of those series where the products and trademarks that appear within are all parodies of existing things. That said, someone had to come up with and actually write up the treatment for My Sister is My Girlfriend (Boom) to use in the episode. That alone gives the whole thing another layer of entertainment outside the comedy hijinks of Umaru and her friends. Apparently, the official Blu-Ray release of the new series is going to include a playable PC video game. I hope it’s something like My Sister is My Girlfriend (Boom).

Himouto! Umaru-chan R can be viewed with English subtitles on Amazon Anime Strike, HIDIVE, and AnimeLab in Australia.

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