Sankaku Mado no Sotogawa wa Yoru

The Night Beyond the Tricornered Window

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Alternative Titles

Japanese: さんかく窓の外側は夜
English: The Night Beyond the Tricornered Window
French: The Night Beyond the Tricornered Window
More titles


Type: TV
Episodes: 12
Status: Currently Airing
Aired: Oct 3, 2021 to ?
Premiered: Fall 2021
Broadcast: Sundays at 22:00 (JST)
Producers: Avex Pictures
Licensors: None found, add some
Studios: Zero-G
Source: Manga
Genres: Boys LoveBoys Love, DramaDrama, HorrorHorror, MysteryMystery, SupernaturalSupernatural
Duration: 23 min. per ep.
Rating: None


Score: 6.321 (scored by 36643,664 users)
1 indicates a weighted score.
Ranked: #70732
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #3440
Members: 27,826
Favorites: 222

External Links

Ranked #7073Popularity #3440Members 27,826
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Episodes: /12
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Kousuke Mikado has been able to see spirits for as long as he can remember. Extremely terrified of them, he tries to suppress his ability by wearing glasses. One day, while working at a bookstore, he catches the attention of Rihito Hiyakawa, an eccentric medium who is convinced that they were destined to meet each other.

Thanks to Hiyakawa's antics, Mikado is thrust into the world of the paranormal, with the former promising that he will shed his fears if Mikado stays with him. As they continue to work together, the two discover a series of malicious curses that all point to the same name—"Erika Hiura." What is this person's goal, and how do they connect with Mikado and Hiyakawa?

[Written by MAL Rewrite]


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Episode Videos

Related Anime

Characters & Voice Actors


Iwanaga, Daiji
Yasuda, Yoshitaka
Director, Character Design
Hatano, Wataru
Theme Song Performance
Theme Song Performance


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Saika (サイカ)" by Frederic (フレデリック)

Ending Theme

"Breakers" by Wataru Hatano

Oct 26, 2021
cutegoyangi (All reviews)
As a fan of the manga who loves it very, very much, I'm honestly rather disappointed by the adaptation. Yes, only 4 episodes have aired, so I am hoping my enjoyment will increase since I know the plot will eventually pick up.

Story: 8
Obviously I'm biased because I read the manga so I appreciate the plot more than others and know what is to come. The general premise as mentioned by others is that two guys go around and do exorcisms and are also in the process of trying to help a detective solve a long-running murder case. There is a large element of BL in read more
Oct 24, 2021
ApocalypSnow (All reviews)
What's up with the title? For starters, most of the anime takes place during the day. And the only reference to anything with three sides is the trio of men with paranormal abilities.

Story: Kosuke Mikado—or Mr. Triangle, since his name is written as "triangle"—has the ability to see ghosts. Meanwhile, Rihito Hiyakawa has the ability to hear and exorcise them through a medium. Obviously, Mikado is that medium, so the two team up to track down a girl named Erika Hiura who curses others. 2/10

Art: Mediocre at best. Even the paranormal stuff doesn't stand out. Madoka Magica and Vanitas no Carte both show wonderful, creepy read more
Oct 25, 2021
Ellenwitch (All reviews)
For shows like these, no matter the concept and story telling. If you're going to have a duo lead the line, then you best make sure that they mesh well together, and can really push the show forward. In this case, it falls flat and misses so many marks. If the characters don't mesh together, or the chemistry is seriously lacking. Then certain scenes are going to be left awkward, and uninteresting by default. If you wanna see a better driven BL kind of show, then you are in the wrong place, and it would be better to watch something else.

Now that's not to say read more
Oct 23, 2021
itsamerosied (All reviews)
i want to preface this review by saying that only 3 episodes have aired so far so this show might improve as it goes on.

despite having an interesting premise, the night beyond the tricornered window throws me off mostly with the main romance. there is little to no chemistry between the two protagonists, with hiyakawa forcing a lot of the "romance" between the two when mikado doesn't seem very interested to start with. i think this is the first show where i have absolutely despised someone in the main couple and whilst this may be intentional, having the story revolve around such an off-putting read more


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