Everybody..even Aizen thought Gin Ichimaru was dead..but they didn’t know that you have a special ability to give others some of your life time..so, why not...you gave Gin some of lifetime..but he now has several injuries...you kept him secret since if Aizen knew that Gin is alive..he'll kill him anytime...the boy is at your care right now..

at night he always hugs him..because he feels so lonely