My cute wife is requesting a "locked room murder."

My wife is a freshly debuted author. A husband and wife secluded in a hot spring inn, quietly beginning their writing work――or so it seemed? "……No, this won't do. I can't come up with any tricks for a locked-room murder mystery." But wait, you're a writer of heartwarming stories, right? Hidden behind my wife's change in writing style is a cute reason…… A hot spring writing diary of a close couple. "Locked-room mystery, come to me!" ◇For those who enjoy stories about married couples, this is a short story that's quick to read. Also posted on other submission sites