so many kids you have with them either before marriage or after marriage 

byakuya kuchiki - before marriage
Three kids: twin girls and one boy later in life after marriage
First twin

Sakura Yamamoto kuchiki
Eye color (yours)
Byakuya back hair
(she had your eye, lip shape and his nose, chin shape)

Second twin

Yuuri Yamamoto kuchiki
Hair color(yours)
Byakuya's grayish/ purple eyes
(she had your nose, chin shape and his eye and lip shape)

Son

hitoshi Yamamoto kuchiki
H/c mix (your original hair color and on the ends with his black hair)
E/c mix (his original grayish/purple eyes and in the middle were your eye color)
(he had your chin, lips shape and his eye, nose shape)

toshiro hitsugaya - before marriage 

Daughter

Yuki hinamori hitsugaya
Eye color (yours)
Toshiro's silver white hair
(she had your lip, chin shape and his eye, nose shape)

shuhei hisagi - after marriage 
Son

Shun L/n hisagi
Hair color (yours)
Shuhei's eye color
(he had your chin, nose shape and his lip, eye shape)

Renji abari - before marriage
Two kids
Son

masa ukitake abari
Eye color (yours)
Renji's red hair
(he had your lip, nose shape and Renji's eye, chin shape)

Daughter

Cana Ukitake abari
Hair color (yours)
Renji's red eyes
(she had your eye, chin shape and Renji's lip, nose shape)