女の新たな性感帯【スペンス乳腺】を開発する人気シリーズに専属女優・三木環奈が登場！スペンス乳腺とは乳房のGスポット！スペンス乳腺研究のスペシャリストに開発されて、Jカップ敏感ボディを震わせ初の胸イキ！「スペンス乳線…？」と疑っていたのに想像以上に怒涛のアクメ連発！あまりの快感に潮吹きまくって痙攣イキ！玩具で乳腺をさらに刺激するとパイズリ中にイクほど敏感に！胸イキで失神するまで徹底開発する3本番！
The popular series exploring a new erogenous zone for women, the "Spence Gland," now features exclusive actress Kanna Miki! The Spence Gland is the G-spot of the breast! Developed by a specialist in Spence Gland research, her J-cup sensitive body trembles as she experiences her first breast orgasm! She was skeptical at first, thinking "Spence Gland…?", but she experiences a torrent of orgasms beyond her imagination! The pleasure is so intense that she squirts and convulses in ecstasy! Stimulating her mammary glands further with toys makes her so sensitive that she orgasms during titjob! Three intense scenes where her body is thoroughly developed until she faints from breast orgasms!

– JavGG.net