Hakaima Sadamitsu

Sadamitsu, a high-school delinguents turned to a masked-hero, while not dealing with his rocky relationship with the strong female protagonist, he puts on a motorcycle-helmet-like mask and becomes a semi-robotic superhero who fights. He is assisted by other possibly- mechanical creatures in order to save the earth from the invasion of 20,000,000 escaped alien convicts. (Source: AniDB)

Type: TV
Rating: R - 17+ (violence & profanity)
Season: winter 2001
Status: Finished Airing
Read more: MyAnimeList (MAL)
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Tags: action sci fi sci-fi science fiction henshin school school life mecha robots based on a manga manga swordplay seinen androids non-human protagonists delinquents aliens alien time manipulation body sharing