FLASHBACK:
2 months ago
Yumi and Sachiko are headed towards the the door fukuzawa residence when somethingor someone glommped at yumi
"okaa-chan"
"Ah! Yanna what are you doing here?"
"yumi?"
"Ah! Onee-sama ,allow me to introduce you, this is yanna my niece."
"your niece? Then why did she call you 'okaa-chan'?"
"That's because when she was just a baby My aunt keeps bringing her here and since I look a lot like her she started to call me that. Speaking of that yanna looks like a miniature you."
"oh now I understand"
"okaa-chan who is she ?"
"yanna, this is my one-sama ,Sachiko Ogasawara."
Yannas smile grew wider then she spoke.
"nice too meet you mommy Sachiko"
Sachiko blushed at the given nickname
"yanna! You should ask first if you can call her that"
"it's okay yumi."
"okay one-sama"