This is JUST an American attempt at lukewarm mediocre anime. There is literally nothing here I haven't seen before story and character-wise, which makes me wonder why it was made in the first place. I can appreciate being inspired by anime, many of us were including myself, but choosing to just BE the anime you like without any aspirations to do anything personal to you or beyond just doesn't make sense to me.
The finalizing was nice and clean, but not particularly anything unique or well-thought out, and the animation was incredibly minimal. If you're going to "do anime," at least follow sakuga rules and animate the fuck out of the important parts. The character designs were blah. The writing was blah. The story is blah. We've seen a girl with a mystical or half-______ friend a million times, and they haven't seen each other in years a million times, there's a mystical friend heirloom a million times, and the character interactions were really difficult to watch. There was literally no effort to make anything other than "anime," which is never a good thing in such broad terms, because anime that is JUST ANIME is never good. You really aimed for the D-material anime with this one too.
The problem here definitely isn't skill limitation, there's potential here in that department, it's that you aimed so goddamn low and went as far as to actually copy shitty D-list anime "comedy" tropes like eye-lighting and sweat explosions complete with a dumb, mindlessly modest main character that would only exist in some ridiculously conservative Middle Eastern country where women are treated like shit.
Also, I have to bring up the fact too that you chose a REALLY bad cutoff point. Nothing in the story was accomplished, and "showing us the characters" doesn't count. Cartoons should have punchlines/climaxes/pop points regardless of what type of series this is. Please, for the love of god don't approach this series with the mindset of relying on future episodes for the interesting parts, that will rob you of any and all rewatch value; this isn't fair to anyone, especially you as the artist putting so much work into these cartoons.
Please, for the love of god give me something I haven't seen before. Now. Not NEXT EPISODE, not in the FINALE which for most quantity-focussed web toon series' doesn't happen. Nothing in this series matters until we've seen it on screen. It's inappropriate to call this episode an Action cartoon when you haven't given us any.