The "life-and-death sibling" story follows Utsutsu and Yume Hasegawa, a boy and his little sister who find themselves all alone. One day, Yume sees a mysterious red butterfly and her body undergoes a strange metamorphosis—into a creature that eats humans. Utsutsu struggles to find a way to restore his sister. (Source: Anime News Network)
Chapters
Chapter 32.6Dearest You + OmakeChapter 32.5Maria's IslandChapter 32Yume UtsutsuChapter 31The First PromiseChapter 30Eating LoveChapter 29Me and PapaChapter 28Suicidal PupaChapter 27The Tour in the WombChapter 26Forest of Internal OrgansChapter 25Higan's FriendChapter 24Earthworm and PupaChapter 23Elephant RopesChapter 22.5Omake 2 + Unlucky BoyChapter 22SleepwalkingChapter 21Frolicking PupaChapter 20Insect SisterChapter 19The Two ArctiinaesChapter 18Where is Sachiko's HappinessChapter 17Honeymoon, Passionate loveChapter 16Remembrance DayChapter 15The BeginningChapter 14Strange NeighborChapter 13Sleeping To DreamChapter 12The Moon and The PupaChapter 11.5Seven days of Yume and Utsutsu + OmakeChapter 11CradleChapter 10Crawling, WrigglingChapter 9Mouth of truthChapter 8Early emergenceChapter 7Psychedelic WhisperChapter 6Losing Sight of TomorrowChapter 5Kind FriendsChapter 4Peeping TomcatChapter 3Red CosmeticsChapter 2Monster girlChapter 1A Fantastic Awakening