Ohkado Masayuki is a parapsychologist and linguistics professor in the Graduate School of Global Humanics and the School of General Education at Chubu University in Japan. His books (all in Japanese) include Scientific Study of Reincarnation (2021), Why Are We Born and Die? (2015), We Can Be Reborn (2015), and A Study of Spirituality, with Special Reference to Xenoglossy (2011). His first book in English is Katsugoro and Other Reincarnation Cases in Japan.