User blog comment:Tinni/Ichimaru Gin/@comment-1706259-20100530121314

Kisuke is hiding things Tinni. Why he didn't keep the Hogyoku with him instead of placing it in Rukia's gigai for one (he must have known Soul Society would come for her after all that time.) Also; what has he been doing since Aizen and company entered FKT. What he has been doing for 100 years before the main storyline. Things like this all add up to mystery.

Also Kisuke never mentioned his family; he just mentioned that he used to live in Yoruichi's manor for a while.