Lost Echoes is the first VN by the new company Petitlinge and is written by one of the writers of Hatsugamai (https://vndb.org/v18790)  .  In this VN the protagonist, Yuuki Riku, is asked by the low-ranking kami, Ryuusen Umi (her name as a kami has been forgotten by both her and the descendants of her worshipers), to go to the past to save the soul of his childhood friend by preventing her previous life (Tachibana Ginchiyo, a rare female warrior leader in the Sengoku era who was the daughter of