Mucchiri Dekachichi Orekko Succubus no Sakusei Report Funtouki

One night in the park, Izumi Naoya meets Aoi, a stray succubus. Apparently, succubi are often required to submit "sperm milking reports," and Aoi is looking for someone to help with this. Naoya accepts the request, but is informed that there is very little time left until the report is due. Aoi also has trouble remembering almost nothing during the act (it felt so good), which is unbecoming of a succubus. With a difficult future ahead, a short-term "collaboration project" begins in bed! Before long, special feelings begin to grow between them... (Source: DLsite translated)