That’s understandable, but I guess try and think about things from his perspective? Being so naive and innocent to the world (he didn’t even know what blood was), being not entirely human (I don’t want to totally spoil you in case you don’t know this yet), being so young and having previously had Karoku as his only (not to mention possibly first) friend— he’s going to be dependent on the few people he’s close to.
But if you do try that and are still annoyed by him, that’s okay. He’s just not your cup of tea. There are plenty of other great characters and things to like about the series overall~ I hope you’re able to enjoy it. ;w;