here’s a walkthrough for both routes in heart rocket and the sidequest, since it seems like a lot of people keep messaging about the same places they get stuck at LOL (warning spoilers lol)
leave your apartment building
interact with the bus stop to get to school
go into the school to the 3rd year classroom (from the entrance it’s just 2 areas up on the door marked ‘3′)
after you get your test and beat nozomi and eli, exit the classroom and go left
talk to kotori (talk to her again to save/heal)
(required only for good route) go to the area left of kotori to find a broken headband
in the hallway with kotori go upwards for a cutscene with honoka where you find she’s lost her wallet and the honoka battle
afterwards go into the door on the left to the cafeteria
interact with hanayo to give her the CD and to find out she needs a riceball
interact with umi to find that she won’t leave her telescope alone until she sees a bird
go back to the hallway area past the entrance area and go left, and enter the club room (the door that says ‘club’)
get honoka’s wallet from the table
go to honoka after getting her wallet to give it back
go to honoka’s locker with her combination and take the glue gun
go to the club room, get maki’s bag, and interact with the electrical socket to glue the headband and find nozomi’s card
talk to kotori to trade her the headband for her bird hat, a riceball, and a sandwich
go to the cafeteria and give the riceball to hanayo and she’ll give you her hairclip and necklace
give the sandwich to umi to initiate a battle, afterwards she’ll give you her telescope
go to your classroom and talk to nozomi, eli will come afterwards to tell you that maki wants to see the stars
leave the classroom and go to the 1st year classroom to get the good ending
go back to the cafeteria after getting honoka’s wallet and give money from it to hanayo, to get her hairclip
go to honoka to give her back her wallet, which initiates another battle
go to kotori to trade the hairclip for her hat, which initiates kotori’s battle
go to the club room, find maki’s bag and look inside, where rin and hanayo will come in and you have to battle them
after beating them, check the electrical socket to find nozomi’s card in it
go to the cafeteria and interact with umi’s telescope to put the bird hat in front of it
when umi runs out, interact with the telescope to steal it
go to your classroom and talk to nozomi to initiate her boss battle
after that leave the classroom and go to the 1st year classroom to get the bad ending
in the hall outside of the club room, talk to the middle NPC among the 3 girls
go to the area to the right and interact with the door to the student counsel room
go to the area with honoka and interact with the door to the library
go to the 2nd years’ room (area left of kotori) and interact with the two NPCs in the middle of the room
interact with the desk at the front by the window
go back and talk to the left NPC of the two (excellentko) in the middle of the room
go to area right of the school’s front entrance and interact with the door to the staff room
go to the area with honoka’s locker and interact with the door to the gym
go back and interact with the staff room
go back to the hall outside the club room and talk to the middle NPC