After the stay over at Sayuri's house, you can run into her little Sumire at the park on Sunday (non-school day).
Befriend her twice (first option), and she will join your party! While she is only lv1, she is your ultimate healer & buffer
Retina (Blonde) & Liatris (Aqua-hair) - Rather nostalgic to see them again. They are from this circle's earlier game

- From the tram station, go to the mountain (700yen). Make sure you are well stock on healing items before going, and prepare for a bit of a grindy ride.
- Run the gauntlet to the end (you will see an event sign and the monument)
- Go in (your friends would join you for the next part)
- For the 3 stooges event... make a save after you get away from them. Run all the way to the right to unlock the Liatris CG.
- Reload and run all the way left for Retina CG.
- After you get escorted back to entrance... This is when the read deal starts. Our destination is to follow the path right and head towards the castle. Do take some time to grind your characters, especially the newly acquired Miyu. There is no penalty for losing in the field, and mobs difficulties are not balanced.
- Make a clean save before you bust inside the castle (fight the guards), in case you need to do more grinding.
- Once you are done with the scripted events, go north and talk to Retina. She will take you thru a secret passage...
- Unfortunately you run into a brick wall... but if you smack her down, you can recruit both her and Retina.
- Make your way to the end and either get stomped and smack that this uber boss (he has 9999HP, but gives a +100 to all stat).