As a Villain, I Never Meant to Make the Saintess Fall for Me

After becoming Leon, a demon spy in a book, I have to share a room with the Saint, even though I know he's my sworn enemy.

Now this is a high-stakes game!

If I start building a good relationship with His Holiness the Saint now, I can still save myself!

From today on, I, Leon, will be His Holiness the Saint's one and only believer!

But maybe I built the relationship a little too well...

Now His Holiness the Saint won't leave me alone...

Leon: "..."

Islena (Saintess): "You can't rest until the work is done, okay~"

The Saint?

There is no Saint. There's only the Saintess who's fallen in love with you!