Jojo's Bizarre Adventure: Part 6--Stone Ocean, Vol. 5 (Hardcover) (manga)

After having finally met up with F.F. and Anastasia, Jolyne and the gang continue their escape from the disciplinary wing and track down the bone. But things go from bad to weird when they run across a scene of madness where other prisoners have been drained to husks, infected by a mysterious plant-form that gives birth to a strange green child. Jolyne accidentally ends up infected by the plant’s odd power, and is unable to stand in sunlight, or else she, too, will meet the same fate as the other prisoners. Luckily, Joylene and company meet a lonesome Stand who seems to be more than happy to help them escape via boat…Ya-Ya Ma.