Muramata-san no Himitsu / 村又さんの秘密

村又さんの秘密 上巻[井雲くす] / Muramata-san’s Secret Vol.1 [Ikumo Kusu]

Mr. Muramata had a secret.
He usually covered his mouth with his hands, but “split tongue” = his tongue split into two.
Mr. Muramata, who is kind to his subordinates, invited him to drink at his home to encourage his failed subordinate Kaji.
Mr. Muramata, who was careless because he was drinking his house, forgot to cover his mouth and saw the secret.
Kaji, who was interested in his tongue, was a virgin, so he implicitly asked for his writing.
Mr. Muramata, who began to think about Kaji, began to attack with the tongue technique peculiar to split tongue.