The 4th installment of "ARINOMAMA"! This time, the star is Tenma Yui, also known as "Ten-chan," who is characterized by her cute face and perky ass. She has worked with the sweet sadistic prince of Reiwa, Shinonome Reiya, on set many times, and they started out with an atmosphere like close friends, which was different from the previous ones. However, perhaps their friendship was a curse, and they were a little awkward...? They fooled around and tried to figure out each other's condition, but they were still veteran actresses and actors. Gradually, they turned on each other and in the end, they devoured each other. More than friends, but less than lovers? Please enjoy the candid time that surrounds the two of them in an atmosphere that is more than friends, but less than lovers, without any cuts!