Hello! Clannad

Despite being abused and bullied all of her life, a 20-year-old shut-in still found the resolve to attempt something heroic-only for it to end in a tragic accident. But in a twist of fate, she awakens as Kanata Natsuki, starting life again as a baby born to two loving parents and an older sister. But her parents die in a car accident and her sister Hana decides to take care of Kanata. Preserving her memories and knowledge from her previous life, Kanata quickly adapts to her new environment. As Kanata's second chance at life begins, she tries to make the most of her new opportunity while conquering her traumatic past. And perhaps, one day, she may find the one thing she could not find in her old life-love. This is where she starts her life.