She's a pure, fair-skinned beauty, but she's also a married woman. The only person she's had sex with is her husband, and this naive young wife , Yui Tomonaga! It's her first time having sex with a man other than her husband, and at first she's extremely nervous, but as the actors attack her, she gradually gives in to the pleasure and climaxes. This is her full-on debut, full of first-time experiences!