I going to Valentine's events at Shop Your Heart Out! and Caderu 2017 Valentine.
Shop Your Heart Out! event have few gift from shops.
(I found a 2 gift only)
Touch for this signboard and select you give for gifts then you can get this guiter.
Hair: Vanity Hair
Caderu 2017 Valentine are exhibition hunt with mini game.
I don't know this event's period, maybe 14th Feb near?
pritty bear cookies and rosetart
and more hunt prise!
and there have are Lucky letter.
funny emotion hud.
Official site(explanation how to play and you can see prise)