Zenless Zone Zero: Dream-Eating Flash

[Zenless Zone Zero] + [Kamen Rider] + [No System] + [Single female lead: Ye Shunguang]

This book tells the story of Su Yunmo, a top agent who transmigrates to the world of Zenless Zone Zero and begins his own path to kingship. Along the way, he will meet many like-minded companions and face seemingly insurmountable challenges, but together they will overcome them all.

Nightmares, Corrupted Ones, Insects... disaster follows disaster, but each one spurs his growth.

But all the clues point to... the Day of Oma.