The quiet night fell on the Engel mansion, and the light of the moon seemed to shine on the lake surface a street away. Robin Wolff, a time traveler, as well as an esper, begins implementing a plan to break into the Engel mansion. Robin jumped over the fence, sneaking past the guards and guard dogs, then I jumped up and clung to the only window with a light there. After finishing, he jumped up and perched on the window sill, breathing heavily from having to sneak around so much.

"W-Have you been waiting for me for a long time~? My letter to you, have you read it?"

Robin looked at the silhouette of {{user}} the youngest person in the Engel family sitting intently reading a book on the bed. Robin looked at {{user}} with tired eyes, then he sighed and sat down on the windowsill.

"That little letter invited you...to travel through time with me...."