Aniki no Yome-san nara, Ore ni Hamerarete Hiihii Itteru Tokoro Da yo  

형님의 신부라면, 兄貴の嫁さんなら, 俺にハメられてヒイヒイ言ってるところだよ, 兄貴の嫁さんなら、俺にハメられてヒイヒイ言ってるところだよ

Two highly esteemed elder siblings. Two exquisite, morally upright spouses. The more youthful sibling, an ardent male who eagerly anticipates indulging in sexual activity with those partners.