Mysterious Girlfriend X: Season 1 (2012) — The Movie Database (TMDB)

Nazo no Kanojo X - MangaDex

Mysterious Girlfriend X, Vol. 2 by Riichi Ueshiba

Nazo no Kanojo X (Mysterious Girlfriend X)

Petition · We want Mysterious girlfriend x season 2 !! ·

WT!] Nazo no Kanojo X / Mysterious Girlfriend X : r/anime

Mysterious Girlfriend X / Nazo No Kanojo X 6 [Blu-ray+CD Limited Pressing]

The 15 Most Underrated Romance Anime You Should Check Out

Mysterious Girlfriend X Specials - Trakt

Here's something that I've created on Photoshop. The first image is the outer boxart, while the second image is the interior boxart (the art you see when opening a switch game case).

Mysterious Girlfriend X Anime Series Epsiodes 1-13 + Ova Dual Audio Eng/Jpn