I'm not sure if anyone has pointed this out but the glider on the main menu looks like the glider from the skydiving game in Wii sports resorts. In other words we're
Skydiving - Wii Sports Resort Wiki Guide - IGN
Wii Sports Resort Skydiving music Intensifies* : r/dankmemes
Wii Sports Resort: Air Sports Skydiving - YouTube
Skydiving - Wii Sports Resort Wiki Guide - IGN
Wii Sports Resort - The First Skydive - YouTube
Wii Sports Resort : Storm Island [Wii Sports Resort] [Mods]