Black Summoner (Season 1)

If you like your isekai built around combat, Black Summoner (2022) is the kind of anime you watch online for the fights. Kelvin comes to in an unfamiliar world with no memories at all, then learns the catch: during his transmigration he traded that whole past away for raw power. He arrives as a Summoner.

His first Follower turns out to be the goddess who pulled him over in the first place. From there Kelvin takes up the adventurer's life and discovers an awkward truth about himself — he's a battle junkie. A Black Knight in a haunted castle, a demon in a sage's cave: he hunts down the strongest foes he can find and plainly loves every clash.

Directed by Miho Arai, with Koki Uchiyama voicing the lead, this is a straight-ahead action isekai with level-grinding and a growing party around the hero. Don't come for deep themes; come for the steady stream of fights. Stream Black Summoner (2022) online on iFILM.