Here's the current bio with both versions.
Sachi Hyoudou
Age;
Issei's Little Sister: 5-6
Stardust DxD: 11
Nicknames;
Sa-chan
Chi-chan
Pervert's Little Sister (one time used)
Cute Little Angel (one time used)
Boy Crazy
Stella Soldier (Stardust DxD)
Star Soldier (Stardust DxD)
Champion (Stardust DxD)
Star Girl (Stardust DxD)
Little Girl (by the Generals (Stardust DxD))
Starlight Champion of the Maidens (Stardust DxD)
Star Maidens' Champion (Stardust DxD)
Karate Girl
Magical Girl
Red Dragon Emperor's Little Sister
Affiliation;
Hyoudou Residence
Kuoh Academy (First-Year Elementary School Student (Issei's Little Sister))
Kyoiseiza Elementary School (Fifth Grade Student (Stardust DxD))
Hemmy (Companion, Instructor (Stardust DxD))
Appearance;
Issei's Little Sister: An adorable 6 year old little girl of average height, brown eyes and short length maroon brown hair tied in pigtails with white ribbons. She always seen in her Kuoh Elementary School uniform most of the time, but she does wears daily clothes at home and weekends.
Stardust DxD: An 11 year old girl with brown eyes and mid length maroon brown hair tied in pigtails with white ribbons. She wears variant of clothing.
Abilities;
Stardust DxD: She possesses skills in both Karate and Judo in blue belt.
Trivia;
Sachi's name means miracle, because with the first two failures the parents have and after Issei was born they believed they couldn't have another child, so it was a miracle to them to have another child.
Her Birthday is January 8th.
She likes both omurice and curry, so Issei has made an 'Omurice Curry' and it has become her favourite dish.
She's a fan of Western fairy tale stories, in which are:
-Alice in Wonderland
-Little Red Riding Hood
-The Little Mermaid
-The Ugly Duckling
-Beauty and the Beast
-Snowwhite and the Seven Dwarves
-Cinderella
-=She even has items themed after fairy tale, such as the Rabbit Butler Clock, the Beast's Rose Lamp, Apple Frame
-Her favourite mythology creatures are:
=Fairies
=Pegasus
=Unicorns
Her favourite colors are white and red.
-Ever since she saw Rias' red hair and how beautiful it is, red has become her second favourite.
Her favourite flowers are roses and cherry blossoms.
She's a big fan of romance.
She dreams of becoming a good wife.
-Though, she's good with chores but her cooking isn't all too well. Her dishes always turn out bland, the only tasty dishes she makes are sandwiches and onigiris
-Her grandmother once told her that if she does not make delicious meals, she'll be a bad wife, much to her worries.
-When she mentioned that, it affected the girls.
-Though, her baking skills are average and her baked sweets always look half-burned or misshapen but they taste good.
More to come depending on the future versions.