After his first night at Tsukiko's house, Seina and his wives get a welcoming party in Masaki Village.
The women are very keen to get to know them all, and also have high hopes since Seina returned as a "man".
Tsukiko's heart is no exception...
it's something that happens 
when you use magic
إنّه شيء يحدث عندما تستخدمين سحراً
è una cosa che si crea quando usi la magia
это магическое явление.