André is secretly in love with Oscar, but he never tells her until both of them decide to help the insurgents when the French Revolution begins. Oscar initially refuses him and asks him to leave her but he stubbornly remains by her side until later on she admits to loving him back. Later in the series, André loses sight in his left eye in order to save Oscar who had been captured by the Black Knight; his condition slowly worsens until he is completely blind. André is a very sensitive and passionate man, suffering for his unrequited love for Oscar but being unable to quench his desire for her and vocally siding with the commoners in their plight.
Sadly, André dies from a stray bullet the day after Oscar's declaration of love, able to share only one night of passion with the woman he lived for, later when Oscar was shot she saw a white bird flying above her in circles, hinting it was Andre waiting for Oscar to come with him to the afterlife. Of course, in the original manga, Andre was killed at the same time as his grandma who died in her bed.