躁のあなた鬱のあたし

“If you’re going to leave me, I’ll just die!”

With a knife pressed against her neck, Utsumi makes a desperate plea.
But Shoutarou walks away—and she follows through with her final, tragic promise.

Years later, Shoutarou is working at a talent agency when he meets a cheerful, energetic idol named Utsumi Harusora…
a girl who looks and sounds exactly like his lost love.

Why does she know about Utsumi’s death?
Why did she approach him?
And who… or what… is she, really?

As memories resurface and truths unravel, Shoutarou is forced to face a past he tried to bury—
and the mystery behind the woman who calls herself "Utsumi."

[Taken from Steam]