You know what's great about isekai anime?

Nothing. Nothing is great about isekai anime. 99% of the time, an isekai anime would be more interesting if you removed the isekai element entirely. Just have your main character be a normal (for their setting) person who has to claw their way up from nothing OR utilize the immoral amount of wealth and privilege they're born into to their own ends like a proper character has to. Fuck going to different worlds, or time travel, or reincarnating with all your memories intact, or just playing a very convincing VR game or whatever the fuck the kids do these days, isekai is bad and it automatically makes everything less interesting and I hate it.

not even death can free us from our chains

Anyway, an old man assassin dies and is sent to fantasy land to be a teenage assassin for a god or some shit. Yay, isekai.