 If you liked
Tate no Yuusha no Nariagari
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 ...then you might like
Yuukyuu no Gusha Asley no, Kenja no Susume: to, Pochi no Daibouken
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The protagonist are the so called anti-hero, who seems to show no care fore their colleagues at first site, however in contradition with what they show they have a really caring heart, always trying to help the improvement of their partners, and, always accepting "quests" with seem to be "mendokusai" (hard to deal with).
They are also more strong then what their fellow colleagues believes than to be