Probably one of the most pathetic main characters I've ever seen. Like how are you gonna be a grown ass adult still obsessing over highschool? So you were a loser in highschool? That's an awful excuse to just give up on trying to better yourself. Use the experience as a learning lesson and move...
If the ambrosia only works on humans, then why did she offer it to Kai even though she doesn't know he's human? Unless that limitation is only applied to Sakura.