A florist on Worlds World, Leena had caught the eye of Touma when he and Yuri were caught on one of the planet's planned rainy days. From the time he set eyes on her, Touma was smitten with her. However, for all the planning he made to woo her, there was one fact he didn't calculate on...

Spoiler

Leena was a lesbian who had her eyes on Yuri.

(Source: Wikipedia)