Dr. Tamaki, a peculiar researcher, delves into brain studies. Hashi, aged 19 and a half, grapples with a car fragment lodged in his brain post-accident, leading to unfiltered vocalization of his thoughts. Hana, at 21, experiences spontaneous orgasms in any setting, even public ones. Meanwhile, 6-year-old Mari inhabits a solitary realm where human presence eludes her perception entirely. Lastly, Hideo, a 10-year-old, boasts of extraordinary abilities to commune with aliens and the divine.