What was interesting about One-Punch Man: The Strongest Man! is that unlike the other One-Punch Man mobile game, the western-only One-Punch Man: Road to Hero, which hasn’t been released in Japan, this Chinese-based game will be hitting Japanese phones soon.
One-Punch Man: The Strongest Man! started out its life as a Chinese only game, locked inside the country.
For me, the game felt very much like Pokémon Masters, and from what I’ve read online about One-Punch Man: The Strongest Man, the gacha mechanics are similar as well.