So... is Murai no Koi finished or not?
It is a bit ambiguous in this case.
Why?
We found unfinished non-core content:
Murai no Koi Gaiden: Great Twin Busters (Spin-Off)
MangaUpdates contains information about the anime adaptation and indicates that it is complete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
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Synopsis
Murai no Koi centers on Murai, a high school student who boldly declares his intention to marry his teacher, Tanaka.
Tanaka, an otaku with a very specific type, promptly rejects him, stating her disinterest in his current appearance.
The next day, Murai undergoes a radical transformation, mirroring the appearance of Tanaka's favorite otome game character.
This drastic change throws Tanaka into disarray as she struggles to reconcile her personal life and secret obsession with Murai's unwavering pursuit of her affection.
The story explores the comedic and awkward dynamic between the two, as Murai relentlessly tries to win Tanaka over, and Tanaka attempts to maintain a professional distance while battling her own inner turmoil.