Kamen Rider from the End of the World

Good news: time travel The bad news: It's the end of the world. Bad news: turned into a monster. Good news: It's the stag beetle monster. In the apocalypse, the body is being eroded like a tide, mankind is retreating steadily, and the fire of hope will be extinguished. What stood in front of the desperate beings was a young figure whose name no one knew. "I don't want to see people's tears anymore..." He clenched his fists, his eyes burning, "I want to see everyone's smiles!" The mysterious spirit stone in his waist suddenly burst out with warm and powerful light in response to the fiery oath—— "Henshin!"