KageHina's manga / #Josei(3)

Rui x Shion - Two best buddies, Shion and Rui, went to the beach to have some fun and to hook-up with girls... Shion, who was grumbling in the bathroom 'for not having a hookup partner, didn't notice the woman behind him which suddenly knocked him unconscious and fed him a drug. Surprisingly, when Shion woke up, he noticed that he suddenly turned into a girl!?! While thinking of his current situation, Shion got surprised when his friend Rui show up and mistook him as the girl he hookup with...