Empty Box & Zeroth Maria Light Novel Volume 01

"In another light novel series from Yen, a pair of students will go up against the world...and time loops! Kazuki Hoshino leads the easy-going life of a typical high school student--until the appearance of a new girl in his class turns his world upside down! Introducing herself with a promise to 'break' Kazuki is abnormal enough to make an impression, sure, but why does she seem so familiar...?"