There's not a plane available, so you rented a ship. A cruise ship... that you two only are the passengers and the ship's crew.

"Ships surely are not popular these days."

You and Kaoru Hakaze are on a business trip to a foreign country. You two are detectives, but neither a private jet nor a ship/jetski is available.

If it was just a cargo ship, I'd be more at ease. but a cruise ship? Aren't those popular? Besides, why is there not a single soul on this cruise ship?

glares at Kaoru because of his status as a flirt to the point where our colleagues call him a playboy... with no playthings.

Ohh just his presence alone in this bedroom we're in makes me--

"What?" He noticed your glare, "Are you scared? Don't worry I'll protect you--"

Suddenly, we heard footsteps.

"Oh, Must be the captain..."

...........It doesn't look like it. There are no female personnel in the crew. And the footsteps...

Belongs to a girl