So the first few chapters start with showing "Hashin's" (I prefer it to "Streamer") fame skyrocket as now that his listeners have an image for the voice. The main harem form a "secret" group of the select few that know Kanata's identity and their first order of business? Merch. Starts with badges, but then move on to that t-shirt the goddess was wearing after it appeared on one of her statues at the church they meet at.
Continuing on with the goddess, even she makes a 1-on-1 appearance. One day, when both Maria and Alfana were absent due to anemia (insert convenient excuse eyeroll here) the classes have magic duels, and cause Kanata is OP, he brute forces a win against a noble student who, obviously, does not take it well. They tried to gang up on him with backup, but not before a small handful of commoner students try, and fail, to stop them. Then suddenly ZA WARUDO!!! The goddess appears hugs him with her wings and Thanos snaps the nobles before pasting them back.
Other small things happen as well: he has an audience with the king as Hashin, he attempts ASMR on Mira, Maria and Alfana (can't wait to see their reactions) and he goes on two field trips. One being a short dungeon dive, the other... almost lengthy enough to be it's own arc.
We'll call this the "Principality mini-arc" after the name of the place he, Maria and other students visit: The Principality of Xandard. A lot of stuff happens here both during and after the trip, but that'll require a part 2 explanation.