俺の陥没ちくびが、先輩の舌ピで勃ちました。

"Your nipples stuck out properly." His senior's tongue piercing goes in deep licking the indent..... His sensitive nipples quiver as they start to stand out...!? (Source: Coolmic) Notes: - All chapters were split into three parts in the original serialization and later combined in the volume releases. - Includes three extra chapters.