Tower Defense game by Mobage.
There's a Succubus unit that delivers a blown kiss attack which shoots out a heart at the target. Unfortunately I don't think anyone records videos for games that run on handphones so I can't show it in action.
There's a sprite rip of the enemy here although it doesn't really show it off very well. The last two sprites are when it's doing the blown kiss attack.
For anyone who wants to play the game for themselves, I believe only the Training Mission 30 Succubus Boss and player recruited Succubus will do this attack. Regular Succubus enemy just stroll along the path (since this is a tower defense game). Succubus are a pretty high value card (6*. Max is 7*) so good luck trying to acquire one or find a player with one (I don't own one).