Translucent: Kanojo wa Hantoumei (2005)

Blurb:
Teen-centric, quirky and romantic, Translucent will appeal to shojo fans who like a little twist with their gakuen mono! Shizuka is an introverted girl, dealing with schoolwork, boys, and a medical condition that begins to turn her invisible! She finds support with Mamoru, a boy who is falling for Shizuka despite her condition, and with Keiko, another girl who suffers from this illness and has finally turned completely invisible. The mysterious disease that these teens struggle with becomes a metaphor in the ordinary lives of the students in their classes, as they try to work their way through their friendships and romances.

Source: www.anisearch.com/manga/4826

Shizuka ist ein stilles und scheues Mädchen, das in ihrem Alltag mit vielerlei Dingen zu kämpfen hat. Darunter sind Hausaufgaben, männliche Klassenkameraden und ihre merkwürdige Krankheit, die sie langsam aber sicher unsichtbar werden lässt. Ihre einzigen Freunde sind Mamoru, der in sie verliebt ist, und Keiko, die an der selben Krankheit leidet, aber bereits vollständig unsichtbar ist.

Quelle: www.anisearch.de/manga/4826