生日：
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Kei a human who is a test subject for the headmeters he escapes their grasp. Kei was an experimental subject and his strength never went above level 5 while other surpasses his ability effortlessly. In escaping, when in desperate moments, Kei could increase his ability to infinity when Ai is in trouble.<br /> <br /> (Source: Wikipedia)<br /><br />
生日：
年齡：
性別：
身高：
Kei a human who is a test subject for the headmeters he escapes their grasp. Kei was an experimental subject and his strength never went above level 5 while other surpasses his ability effortlessly. In escaping, when in desperate moments, Kei could increase his ability to infinity when Ai is in trouble.<br /> <br /> (Source: Wikipedia)<br /><br />
