Kinnikuman: Seigi Choujin vs. Kodai Choujin
Japanese title: キン肉マン 正義超人ＶＳ古代超人
Type: Movie
Episodes: 1
Source: Manga
Genres: Comedy, Sports
Studios: Toei Animation
Duration: 45 min
Rating: PG-13 - Teens 13 or older

While Kinnikuman is on vacation with Mari-san's kindergarten class at Easter Island, the young wheelchair-bound Kouichi-kun laments being with an idiot like Kinnikuman, preferring to instead be with his favorite Seigi Choujin Buffaloman. Meanwhile, the other Seigi Choujins are also vacationing at ancient landmarks.

(Source: Wikipedia)