Seven Bonds

Kiznaiver meets FMA Brotherhood. These seven were chosen in their show for being the "seven sins" that weren't even the sins. But if they were there sins then:

Hisomu is Lust,
Chidori is Envy,
Yuta is Gluttony,
Katsuhira is Sloth,
Tenga is Wrath,
Maki is Pride, and
Nico is Greed.