Episode 17 of the DN Angel anime.
Daisuke's class goes on an excursion to a tropical island. Takeshi is oblivious to Mio's obvious like of Daisuke. Both Risa and Riku are increasingly attracted to Daisuke and a nature hike will determine which twin will end up with Daisuke.
- When Risa is sitting be herself during the hike her hair is red like Riku's.