(Note: Shinji is still a Rider! Delta, Ryuki... oh no, that's a spoiler!)
Yusuke Godai: "Shinji! Have you been training properly while I've been away?" (gives a thumbs-up)
Shoichi Tsugami: "Kido, stop going to your little sister's place all the time!" (grins)
Takumi Inui: "You bastard, Shinji! I'm gonna burn you to a crisp!" (pulls out his phone)
Kazuma Kenzaki: "Shinji, we're friends (buddies), right?" (holds out his right hand)
Souji Tendou: "Grandma once said... Hey! Kido! Stay away from my little sister!" (points skyward with one hand)
Utaha Kasumigaoka: "You idiot! Hurry up and come home!" (shakes her leg wildly)
Dragreder: "Roar! Roar! Roar!" (circles Shinji)
Shinji Kido: "Meeting all of you, meeting you, and being able to protect the peace of this world: that's what makes me happy."
(A crossover using the settings of the old Heisei Kamen Rider series! Ahem, I'll only go into detail on the stories of the few Riders who appear above. Others might show up briefly, but I won't develop their stories...
That'll be for the next book!
I'm a beginner writer, so the early chapters may be a little rough. Please go easy on me, thanks.)