Caution: It is not recommended to watch this video, if you haven't finished the game "Doki Doki Literature Club"
I also encourage you to play this game, which is free on the steam. The story is very short.
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The song is the opening of the anime version of "Noucome(俺の脳内選択肢...)". As during the game, the choices pop up unexpectedly and force me to click ok, I associate this with what happens in this anime. There are also other reasons for me to choose this song, but i'm not gonna write an essay to justify my decision. I sincerely hope u can enjoy this AMV/MAD despite its foreign language.

A side Note:
I am used to working with AMV, and this is my first time to make MAD(imo, a Japanese term usually referred to the AMV based on static pictures from games/manga/novels).