It is a bit ambiguous in this case.
The anime finished before the manga:
Anime finished: December 12, 2013
Manga finished: February 01, 2016
We could not confirm the source content in MangaUpdates.
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Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru centers around Kanade Amakusa, a high school student afflicted with a bizarre and embarrassing curse called "Absolute Choice."
This curse forces him to choose between two options that pop into his head, often in public, and the choices are usually absurd and humiliating.
As a result, Kanade's reputation suffers as he tries to navigate everyday life while desperately avoiding his next "choice."
His already complicated life is further disrupted when one of his choices leads to a girl falling from the sky, hinting at even more chaotic and comical situations to come.
The anime focuses on Kanade's struggle to maintain some semblance of normalcy while dealing with the constant interruptions and bizarre scenarios caused by his curse and the girls it brings into his life.