Some people become memories. Some memories become regrets.

Satou Kousei never expected his high school years to change his life.

Then he met Mitsui Tsuki.

What began with a chance encounter slowly became a story of friendship, love, heartbreak, courage, and choices that could never be undone.

Along the way, Kousei discovers that everyone carries regrets of their own. Some are born from the things we did. Others come from the things we were too afraid to do.

But perhaps regret isn't something to escape from.

Perhaps it is what shapes us.

Because regrets sculpt our lives as beautiful art.