"Ojisan de Umeru Ana" seems to be the title of the anime. The name appears to be Japanese, and when translated, it roughly means "The Hole That Can Be Filled by an Old Man" or something similar, though the accuracy of the translation can depend on the context and nuances of the Japanese language.
The series was released as an OVA (Original Video Animation) on DVD in Japan. Release Context
System and Software Preparation:
Introduction
, a high school student who feels no attraction toward popular idols or boys her own age. Instead, she harbors a deep, secret fixation on middle-aged men—a preference rooted in a childhood encounter that she remembers with arousal rather than trauma.
Production Quality: As a Pink Pineapple production, the animation follows standard OVA quality for the genre—prioritizing detailed character art over high-frame-rate movement. User ratings on aniSearch currently average around 5.68/10, suggesting it is a fairly average entry in its category.