Seiya Ryuuguuin

Seiya is the main male protagonist of the Kono Yuusha series. He is goddess Listarte's summoned hero.

When Lista had to summon a hero of her choice, she was puzzled whether to choose a mage or a fighter. When she accidentally dropped the cards, she stumbled upon Seiya's card and was fascinated by his stats.

However, on summoning him, she learnt that he was really invincible, but also extremely cautious. He took really long to believe that she was really a goddess and that he was summoned as a hero. He would even go all out against a pitiful slime because he was suspicious of it being a demon king!