Anime Crossover: As Kamen Rider, I Want to Protect Everything

(Multiple heroines + a low-key System + nuanced romance + no tragic heartbreak or giving heroines away + cameos from Oreimo, The Quintessential Quintuplets, and more)

The girls trembling among the ruins watch the figure fighting in the flames and shout, “You can do it, Ji Ye!”

That figure turns to look at them...

“Watch closely. This is my transformation!”

“I promise I'll come back to you!”

“All I want is to protect your smiles!”

Reborn in a rather strange parallel-world Neon Province, Ji Ye is born into a top-tier family and decides he's going to make the most of this life by falling in love!

That's what he really thought, at least, before the System appeared.

“The threat of monsters is everywhere in this world. You are the chosen one, destined to save the world. System mission: When you resolve to act, you will awaken your own power!”

When eighteen-year-old Ji Ye stands before a monster, shielding the trembling girl behind him, he says:

“Watch closely. This is my... transformation!”

Even as a Kamen Rider, I just want to have a proper romance... Maybe... with more than one person?

But I still have to protect everything!

(This book has quite a lot of action. I'll do my best with the romance. The setting is very different from the original, and everything takes place in a parallel world!)