It started with a cake.

A small cake, vanilla, iced in white with stripes of chocolate criss-crossing like Fourze's suit.

It read "Happy Birthday Fourze."

Gentaro had found it at home and immediately shared it with Yuuki, but he had no clue who it had come from. She didn't know, and she was curious if maybe Kengo knew.

Kengo, however, chalked it up to that mysterious sender who'd given him the Switch for Rabbit Hatch in the first place and didn't tell either of them about it. After all, that was his business—him and his dad—and he wasn't about to let Gentaro find out about it. If it meant Gentaro thought that Kengo had baked the cake, all it took was a blunt denial and sitting at the computer to try to figure out the next Switch to get him to shut up.

But after a million and one questions of where it had come from otherwise, Kengo was glad to have the peace and quiet of Rabbit Hatch to himself while Gentaro and Yuuki got lunch.

At least, it was peaceful and quiet until he suddenly heard a tapping sound at the airlock. Almost like…

No, it was. Someone was knocking.

Suspicious, Kengo brought up video footage. Was it possible the Zodiarts had found them out? But no, it was someone in a spacesuit—not a monstrous Switcher.

An impossible hope filled him as he allowed the astronaut into the airlock and pressurized it before opening the door to the station. But that hope fell—not to disappointment; he knew better than to truly believe it could happen—when he saw that the astronaut wasn't his father miraculously alive. Instead, it was a woman carrying a box.

"Delivery from my boss," she said as she handed it over. "The Kougami Foundation is interested in your work."

"Kougami?" Kengo repeated incredulously. The Foundation was incredibly generous with its research grants, but how did they find out about the Astro Switches?

"Let's work together sometime," the woman replied, but briskly and professionally, not enthusiastically like Gentaro and Yuuki would.

She made her way out of the airlock, and Kengo decided to open the box. Inside was another cake—vanilla, just like the original—topped with forty sliced strawberries. A white chocolate plaque in the middle read, "Happy Birthday KRC."

Kengo was speechless for a moment and considered taking a space suit and going after her, but the idea sounded crazy even in his head.

After all, how exactly was he going to tell her, "It's not a club," when she'd gone through all the trouble of getting them a cake up here?

Kamen Rider is the property of Toei and Ishimori Productions.