So regarding how astronomy possibly plays a big role, I didn’t realize the school’s name was 星ノ海, or “Sea of Stars,” and Yuu then comments to the star obsessed Ayumi, in a totally-not-obvious-foreshadowing manner, “sounds like the school was made for you.” So I’m guessing via wild speculation that the “dead” brother/dad/older relative plays a huge role in people with special powers and equates each person/power to a star or constellation and thus uses the school to gather them for some reason related to Ayumi, who will also be very important to the plot. Maybe she develops a power which is important to solving whatever the problem is…or alternatively, a power which someone wants to use for selfish gain? Ayumi’s obsession with stars would also be because she always listened to said relative obsessively talking about astronomy but AMNESIA WHO IS HE AGAIN?
