Repair the leak at the school.

Recover Kokoro's memories.

Recover Shiho's memories.

Recover Hinako's memories.

Recover Rena's memories.

Recover Kirara's memories.

Recover the Hirahara Sisters' memories.

Recover Yuki's memories.

Recover Yuzu and Lime's memories.

Recover Uta's memories.

Create Origin Gate.

Raise Ao's Talent level to maximum.

Raise Kokoro's Talent level to maximum.

Raise Rena's Talent level to maximum.

Raise Yuki's Talent level to maximum.

Raise Shiho's Talent level to maximum.

Raise Hinako's Talent level to maximum.

Raise Kirara's Talent level to maximum.

Raise Hiori's Talent level to maximum.

Raise Mio's Talent level to maximum.

Raise Uta's Talent level to maximum.

Go on 100 dates.

Activate Ether Tide for the first time.

Activate Ether Tide with all characters.

Develop the bath.

Get all characters to level 50.

Cut grass 50 times.

Access 10 different school facilities.

Defeat "The One Who Fell from the Sky."

Defeat "The One Who Came from Nothing."

Defeat "The World."