Erika and Nagi walk around the festival together, and she shocks him with how out-of-touch she is.
Sachi-chan's my sister!
!ساتشي-تشان هي أختي
Sachi ist meine kleine Schwester!
Sachi è mia sorella!
A Sachi-chan é minha irmã!
Сати всё-таки моя сестра!