Tsurugi Watanabe

Zyuland, a world parallel to ours, is attacked by aliens, the Deathgalian. Four of its inhabitants (called Zyuman), Sera, Leo, Tusk and Amu call a young man from our world for help, Yamato. After taking human form, all five form the Doubutsu Sentai Zyuohger. (imdb)

Kazuaki Sakurai is a 37-year-old man working at an advertising agency. For a CM shooting, he goes to a beautiful house. At the house, he meets Yoichi Mizukawa while he is painting a picture. Yoichi is a 19-year-old art student. He lives with his cousins in the big old house. Kazuaki becomes attracted to Yoichi. Meanwhile, Yoichi is only interested painting, but he begins to take an interest in Kazuaki. The two men get closer, but Kazuaki gets transferred to Osaka. (mydramalist.com)