DLsite : http://www.dlsite.com/maniax/work/=/product_id/RJ130114.html
DMM : http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_066260/

Base +13, yakumo1 +6, Bane13 +31, Myzer +8

Rare non existence story, so says dlsite english

One day a young man gained the power to hide his existence.
That is to say, he existed, but nobody noticed him!
Of course he abused this deceptive power by going into the bedroom of his longtime friend
and other girls, taking off their clothes and touching their newly grown breasts.
Nobody stopped him. He could even have sex with them.
But there was a reason he was given this power...

Base +5, Bane13 +31, uareader +22, Ooe Kintarou +4, Myzer +8

Ive seen a lot of stupid nonsense ntr stories, but this really tops a lot of them, but not all

Base +1, Bane13 +31, Cheshire1UP +6, Ooe Kintarou +4, Captian Katsura -7, Myzer +8, MelmothTheWanderer -15