兄妹のカラダは神相性！？～喧嘩するほどナカがこんなにイイなんて…っ

"Do you admit you're getting aroused by being touched by your brother?" I tingle pleasantly every time he touches me… though we fight like cats and dogs, why are we so physically compatible…!? (Source: Coolmic) Note: Simultaneously released in long-strip and traditional formats.