Make a quicksave.

Check your key items.

Talk with Library multiple times.

Encounter Hanako.

Read the diary in the library.

Read "The Lazy-Eyed Ranger."

Jump off the rooftop.

Have a meal.

Refuse to help Yoshino.

Hide in a cardboard box.

Save Kudoh.

Play the piano.

Get a whiff of a toilet.

Find the message in the back of the laboratory.

See the bad ending.

Clear the main game with the male protagonist.

Clear the main game with the female protagonist

Give Misao some coins

Free Kurata in the Truth route.

Clear Truth with the male protagonist.

Clear Truth with the female protagonist.