Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken  

Recently, I encountered my childhood acquaintance once more. She has transformed into a stunningly pure individual. It was you who greeted me with "Hayato," wasn't it? In our youth, we frolicked in the mud together in the countryside. Upon meeting him again, it seemed as though Hayato had shed his impudent demeanor from our past encounters. However, when in front of him, she discarded her coat and displayed her old crude behavior, just as she did before. Despite this, our relationship has remained unchanged.

Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken began as a web novel on Shousetsuka ni Narou on June 13, 2020. Kadokawa has released a revised and illustrated version of the series since February 27, 2021 under its Kadokawa Sneaker Bunko label.