♪ sᴀʏ ʏᴇs ᴛᴏ ʜᴇᴀᴠᴇɴ ♪ ♪ sᴀʏ ʏᴇs ᴛᴏ ᴍᴇ ♪ . . . kaori tsugikuni, a fourteen-year-old girl with a bad past, joins the demon slayer corps after meeting her savior. when training under the water hashira, she coincidently bumps into a boy her age - muichiro tokito, someone dealing with amnesia due to his traumatic past. what will happen next when the boy and the girl get to know each other?