Kouki Kokoro, who says to call her Shii, suddenly drops in on the DIY club and asks if she can join. Everyone except Kurei happily accepts her. When Shii says she’ll be helpful because she’s stronger than anyone there, Kurei challenges her to prove it.
Haruko-sensei and Shii-chan... 
How do you know each other?
كيف تعرفان بعضكما
يا هاروكو-سينسي وشي-تشان؟
Haruko-sensei, woher kennen Sie
und Shii-chan sich denn?
¿La profesora Haruko y Shii
se conocen?
¿La profesora Haruko y Shii
se conocen?
Comment vous vous connaissez,
toutes les deux ?
Dottoressa Haruko, Shii...
come fate a conoscervi?
Haruko-sensei e Shii-chan...
Como vocês se conhecem?
Харуко, вы с Си друг друга знаете?