Dawning

Dawn, who lost his parents when he was young, visits the address of a letter from the past to know the circumstances surrounding the death of his parents. There, he met Hames and lived with him. After a while, he felt affection for him. One day, as he spends his peaceful days with him, Dawn finds out that the person who killed his parents was Hames himself...

(Source: Lezhin Entertainment, translated)