A university student summoned to another world as the Spear Hero. He is an easy-going and handsome womanizer.
After being abandoned by Malty, He has developed an obsession for Firo Rials. After Firo tried to cheer him up. He can now only see women as pigs in the literal sense. He raised three Firo rials, called Kuu, Marin and Midori because he couldn't get Firo's attention. He also unlocks the curse series. His sins are Lust (for Firo) and Envy (for Naofumi's position of being loved by Firo).