A very promising start! I liked the writing, and the character designs are cute. Maybe a weird thing to focus on but I was very impressed by the background art for the visit to the ancient library.
I was somewhat surprised when I finally reached the “gameplay” part of the game, since I didn’t look at the screenshots before playing. The intro was long enough that I assumed the whole game would use a typical visual novel presentation. Maybe those elements could be worked into the introduction somehow.