Toujima Tanzaburou wa Kamen Rider ni Naritai

The story of Tojima Wants to Be a Kamen Rider follows Tanzaburo Tojima, a forty-year-old man who is abnormally obsessed with the Kamen Rider franchise. Tojima is about to give up on his dream of becoming a hero until a chance encounter with a robber changes his fate forever.
(Source: Crunchyroll News)