One day my kouhai at work asked me something strange -- "Hey senpai, wanna hang out at a love hotel?" And that's how our relationship changed forever...
Daiki starts living together with, Ryou, a professional basketball player. Ryou has a big body and a big you-know-what, and the two eventually become intimate... but with such a difference in size, will their first time together go smoothly?
For the purposes of research, a biologist makes contact with a tribe of dog-like people who live deep in the jungle... sexual contact. Unable to refuse, and without protection, thus begins her hands-on investigation into the unknown~