Gekijouban Steins;Gate: Fuka Ryouiki no Déjà vu

The manga adapts the anime film that revolves around Kurisu Makise as she tries to save Okabe Rintarou from his uncontrolled leaps in time. Kurisu must decide if she will save him as his lover, or not bring him back to the main timeline with her morals as a scientist.

(Source: Anime News Network)