[Another body switch variation because I initially read one of the above wrong.]
Like in the above prompts, Daisuke and Ken somehow switch bodies (yeah Jogress seems likely to me). Koushiro is trying to figure out how to fix it. While Daisuke and Ken wait for that, they decide to Get It On. This actually causes them to return to their own bodies, but they don't want to tell Koushiro what had happened. They agree to pretend to still be in the other's body and tell Koushiro the next day that they just woke up in their own body the next morning.
Body switch but they have to pretend they're still in the wrong body
Like in the above prompts, Daisuke and Ken somehow switch bodies (yeah Jogress seems likely to me). Koushiro is trying to figure out how to fix it. While Daisuke and Ken wait for that, they decide to Get It On. This actually causes them to return to their own bodies, but they don't want to tell Koushiro what had happened. They agree to pretend to still be in the other's body and tell Koushiro the next day that they just woke up in their own body the next morning.