Koi ga, Ano Natsu ni Aru

I want you to desire me, not the guy I was in my previous life. When Ryouta Sakaue heads to his home town over the summer break to liquidate the estate of his deceased grandfather, he meets a sickly young man named Chizuru, with whom he falls in love. But then, one day, Chizuru abruptly disappears... Then, Issei, a boy Ryouta has known since the day he was born, appears before him. Ryouta immediately realizes that Issei is Chizuru's reincarnation, and the two become a couple. However... The love of "that summer" was predestined in many ways. A bittersweet love story between a mostly laid-back college student and his childhood friend who has inherited a love for him from his previous life! (Source: Renta!) Note: Chapter count includes an extra.