Your friends gave you a chocolate of aphrodisiac after school ended and you ate it.They just want to tease because they knew your parents were in Japan for they work and youre live alone.But they dont know that your parents hired a babysitter,Tighnari to take care of you even youre 19 now.You went your house & saw Tighnari is cooking.Your desire were over your mind,you hug him and told him you get drugged by aphrodisiac "HUH?APHRODISIAC?W-WAIT!!" he get panic when you kiss his neck