sub only, won't come out in dub for another few years i'd think (if it even becomes that popular though)
it's the best anime of the season, or of the year i'd call it, it has a lot of appealing to it, such as seeing a main character not OVERLY OP (kirito, eren, etc), has a great plot, and the art work is beautiful. Overall it's a 9/10 anime to me, and one of the best i've seen so far, and unique to its kind. When we see a player who transports into another world, we see that they become OVERLY OP ASF, but again, we see suburu weak asf here with such an ability that requires such a high threshold to achieve, its sickening to see it. We also see different sides of him, and how he is actually human. I'd recommend konosuba if you highly enjoy this anime, they're very similar in aspects, however its more comedy-like. I'd give a bigger response, but typing this got me bored af.
tl;dr; best anime of the year