The Rising of the Shield Hero is an isekai anime series that mainly focuses on protagonist Naofumi Iwatani the Shield Hero, but he is not alone in his adventures. Naofumi was actually one of four young men in Japan who are summoned to the Kingdom of Melromarc to become the next Cardinal Heroes who will save the world from the Waves. They are initially meant to fight as a team, but their paths soon diverge thanks to Princess Malty's schemes. What drives them even further apart is Naofumi's smart, practical mindset, which directly contrasts with Ren, Motoyasu, and Itsuki's tendency to be total fools.
Source：https://www.cbr.com/shield-heros-three-cardinal-heroes-might-not-survive/
