Key Features

A dark mystery romance
A time-loop mystery set in a once-peaceful school. When friends turn against you, uncover the identity of the killer "X".

A fated romance with only one person: I-on Moon
Sweet Clockwork is a complete story centered on I-on Moon. He risks his life to protect you; save him from the tragedy that awaits. Other characters are part of the mystery, but this game does not contain separate romance routes for them.

Multiple bad endings. One true ending.
Your choices can lead to tragedy. Find the path to the one true ending with I-on Moon.

Story

On a bright July day—your birthday—a mysterious love letter asks you to come to the Year 1 Class D classroom at 6 PM.

You open the door, expecting a confession. Instead, death is waiting. As your consciousness fades, the same morning begins again.

With the Time Travel Ring, rewind time and seek a way out of this nightmare. A voice reaches you across time, promising to protect you. Can you break this time loop and save the people you love?

Characters

Haena Ji — Protagonist; her name can be changed.
I-on Moon — An upperclassman who cares about you and looks out for you.

Other characters: Chabin Han, Sol Yoon, Dorim Chae, Jian Ban, Yohan Go, Gaon Gil, Iri Dam, and Jeong Dokgo.

Haena Ji (Name Changeable)

I-on Moon

Chabin Han

Sol Yoon

Dorim Chae

Jian Ban

Yohan Go

Gaon Gil

Iri Dam

Jeong Dokgo

Content Warning

Contains dark themes, violence, blood, weapon-inflicted injuries, and character deaths. These are presented through text and visuals that imply the events.