Muramata-san no Himitsu Episode 2 , English
In a large corporate building, a senior female worker is training a new male coworker. After some drinking in the house of the senior female worker because the bar was closed, he noticed that his senior can part her tongue into two. After she sees that he gets curious of her kissing skills with her two tongues, she suggests to give it a try. Then they decide to escalate the moment and try her special tongue skills while giving him a blowjob.