Shounen ga Otona ni Natta Natsu  

少年が大人になった夏

Ryuuki Kirishima is a young man residing with his elder sibling, Reiko, in the aftermath of their parents' untimely demise in a car crash. On a warm summer day, Ryuuki and his companions gather for leisurely viewing of adult videos. Despite not typically enjoying such content, Ryuuki finds himself inexplicably drawn to videos featuring Kiriru, a renowned and up-and-coming porn actress. As he watches, he experiences a powerful attraction towards her. To his astonishment, she materializes before him in real life.