I didn't see Luka yandere coming omgONIISAN YOU WILL NEVER BE ABLE TO BECOME A PLAYER GIVE UP (☝ﾟ∀ﾟ)☝http://www.nicovideo.jp/watch/sm3146172
Luka is the perfect yandere, long hair, always seen as a level-headed upper classmen, so in my head = yeandere.FOREVER TRYING!!!!
It reminded me of your yandere Hetalia character （人'∀'）
hahaha yes! xD(lol me and yandere characters~)