According to the film's lore, the fresher the underwear (specifically belonging to someone he likes), the stronger he becomes.

Many releases of this specific BRRip file include stylized subtitles that change position or font during the hero's over-the-top finishing moves (like the infamous "Inari Sushi"). Expand map

He only gains superhuman abilities by wearing a pair of women's panties over his face.

If you are looking for a specific (like "Color-Coded Subs" or "Commentary Tracks"):

It sounds like you're diving into the wild world of (also known as Hentai Kamen ). This 2013 live-action adaptation of the classic 90s manga is famous for its "interesting" (and very NSFW) premise. The "Interesting" Feature: The Power Source