At the same time, psionics, a hormone that gives certain people extrasensory abilities that are effective against the Others, is discovered in the human body.
The pain that comes from attempting to resist the brainwashing causes him to become particularly maddened by the time he encounters Yuito and company again.
But, for some reason, people seem to be deferring to Yuito's story first and saving Kasane's.
When that failed, the Moon Colony formed the Extinction Belt over earth and thanks to Togetsu, Kagero been stuck on Earth for over 2,000 years thanks to cryogenic sleep, all but ensuring that his family has died of old age long, long ago.
Both Shiden and Naomi imply that Kasane actually has feelings for Seto, but she's completely caught off guard when this is pointed out to her.