I can't find a single likeable character in this show, they are all annoying me
I respect your opinion, as this is a pretty subjective thing, but we're two episodes in man, you don't usually know everything about every character and love them to the moon and back within this short of a time frame. Of course I'm well aware that I'm biased since I read the manga, but even if I try to look back to how I felt early into the read, I find myself already somewhat enjoying the characters to a certain extent.
Jiro is a decent MC and I also really like Rago, especially his dynamic with Jiro is fun to watch; in general I love the "being partners with the source of your power" trope. Jiro's grandpa works as a good mentor figure as well and when it comes to the rest, well they've barely been here for an episode, as they've been introduced towards the end of the first.
Both Shiba and Ichika had no time to shine yet, especially Ichika might come off as incredibly annoying at the start (I'd know, I legit hated her attitude in the beginning), but she gets a lot more bearable and likable as the show goes on. I don't know, I think they call this something something character developement, I don't know, sounds important.
Beyond that, we've only met like less than 30% of the entire cast. [Beware, here follows an entirely personal rant that is not directed towards anyone here in this thread in particular] This is one of the biggest issues of modern anime audiences tbh, zero patience. Going a 2 or 3 episodes in, saying "Meh, next" and going on. I respect not wanting to stick around with a show if it doesn't interest you, but a lot of people then act like they know everything a show has to offer, even though they've just seen a miniscule amount or sometimes nothing at all from the show.