An antisocial beauty with a resolute personality. She transfers into Kazuki's class on March 2nd—right before the end of the school year. Immediately upon her arrival, she announces her intent to “break” Kazuki.

~!Her life first intertwines with Kazuki when she sneaks into Mogi's box that created the recurring classroom. Being a box herself, she is able to keep her memories each recurrence. She spends years searching for the one who has the box and created the recurring classroom. During this time she also spent lots of time obtaining new skills, such as martial arts and how to ride a motorcycle.!~

~!In the final volume Maria and Kazuki get married.!~

Kazuki Hoshino treasures nothing more than his ordinary life, and March 2 should have been an ordinary day. The arrival of a transfer student, the mysterious Aya Otonashi, shouldn't have shattered the world he knows. He's never seen this girl before in his life, but she says she's met him thousands of times--and declares war on him for a crime he can't even remember... As the truth begins to unravel, nothing is as it seems, and at the heart of it all is a wish powerful enough to change everything...<br><br>(Source: Yen Press)

Maria Otonashi