ConCon after reading you guidelines, i'd suggest waiting till a little later to reveal the villain. Maybe episode 2 or 3. Vaguely. Because then the conflict and villain will feel rushed into introducing. It's better story telling wise to slowly work your way into revealing the major conflicts. To make it seem more dramatic.

Also spend some time assessing where everything is, time periods, locations, and atmosphere of the open world or the city (when he arrives.) Through dialogue or people encountered.

Sorta like maybe a small glimpse of the villain at the end. It's just way of like, getting the viewer hungrier for more. So my advice would be to follow tori, for the majority of 1 and episode 2. We can't switch a lot between characters or they will feel underdeveloped, what you do is spend an ample amount of time on Tori, establishing his personality, internal conflicts or goals. Then after his path is set, you slowly pull out the villain or "word of" the villain. Then as the series go on, reveal more and more of Lord Hampa. Then after you have developed tori's story enough, have one to two dedicated episodes on developing the villain more. (maybe throw in periodically what tori is doing, to let viewers know he is not forgotten) Show Hampas goals, personal conflicts and motivations. Then when having both your main and villain developed you begin developing their conflict together. Have some run ins into each other, physical conflicts. yadda yadda.

Then that'll ride the series home when conflicts get more serious and serious.

So if your asking what would you put after the "tori goes towards the city." You could switch to the "companion" Tori will be meeting. Dive a little into what he's doing prior to tori's arrival to the city. I don't know what he'd be doing, because i don't know much about him yet, but what ever his job, or activities are. Maybe have a segment of that, maybe him doing some training or getting into trouble. Then after, switch back to tori arriving, and have their paths cross.

Sorry if its a lot haha, I'm a Movie Critic Journalist in my free time

I also see you don't have anyone for music choice? It's a very key essential piece of storytelling, almost as much as the dialogue itself. So i'd be up for that, even though theres no group for that. Selecting good music that accompanies the moods, actions, scenes, and tells the story.

But before music is selected, its important for whoevers choosing the music to know the location and time period. If its ancient setting, you know then more ancient cultural music. If its a post apocalyptic world where man has regressed back to ancient like conditions then more emotional science fiction music.