"Sorry." Ayia muttered with a guilty face.
She understood why the family acted so vigilantly.
She was distracted for a while.
"So, why are you searching about managing musical careers?" Shizuka asked after she saw that Ayia understood the warning.
Ayia's eyes lit up with Shizuka's question.
"I can't tell you!" Ayia exclaimed as she turned her head sideways.
"But I tell you if you keep as a secret!" She said as she looked at Shizuka with playful eyes.
Shizuka shook her head seeing her sister being silly again.
"Sure, I promise." Shizuka replied with a calm voice.
"Not enough. It has to be a thumb promise!" Ayia exclaimed.
Shizuka's eyes widened a little when she heard that.
A thumb promise was unbreakable between the siblings.
After all, as Ayia used to say 'Th pinky is too weak, only the thumb can have an unbreakable promise'.
Shizuka couldn't even tell the rest of the family.
