Kamen Rider Hibiki (2005)

-Same producer, composer, overlapping staff

-Similar themes of supernatural oni-like warriors with powers based on Japanese folklore fighting ancient, ghostly yokai

-The main focus of the story isn't the superpowered heroes but a normal human who is dealing with a crossroads in their life and befriends the superheroes

Both are very mobile riders. While Hibiki has a home base he is frequently shown camping and training looking to fight monsters. Stronger does not have a place to stay and is always traveling looking for an enemy plot