B't X

, pronounced "beat X" and stylized as B'T X, is a science fiction mecha manga series, written and illustrated by Masami Kurumada. It was serialized in Shonen Ace from 1994 to 2000, with the 63 individual chapters published into 16 tankobon volumes by Kadokawa Shoten. An anime adaptation containing 25 episodes was aired in Japan between April and September 1996, this series adapts the first six tankobon volumes of the manga. A second season containing 14 episodes and called was aired between August and November 1997, this season adapts some chapters of the manga but has a derivative storyline and an alternate ending.