https://www.youtube.com/watch?v=aifXu5kcETI
This song is beautiful. It's a song about an older sister, Ayano, who has to look after three children, her younger siblings, who think they're monsters. She convinces them that Red is the colour of a heroine. She later kills herself to try and get the red eyes, but doesn't sucseed. It's truly a beautiful sing with a beautiful meaning and it had me in tears. IA sang it amazingly and I love it. I'm crying and probably will be for the next 2 hours.