Haru Urara Sukimono no Yado

One day, Miharu, a clumsy businessman, overslept on the last train and ended up at an abandoned inn in the mountains. There he met Fujio, who was the heir to the inn, by chance and spent the night with him. However, when he woke up, he found that the inn was still open for business, and the landlady said that Fujio had "long since died". In order to help Fujio, who had been so kind to him, to rest in peace, Miharu responded to all of Fujio's erotic requests, but...!? (Source: Shinshokan, translated) Note: Includes one extra chapter.