Shinpachi returns home with a gift for his sister—a doll that oddly resembles Elizabeth, with the name “Space Monster Stefan” printed on its chest. But what awaits Shinpachi is a deadly naginata swing by the raged Otae. While Shinpachi narrowly dodges the attack, Stefan falls prey to the naginata. As she tears Stefan apart, Otae explains the reason behind her fit. It appears the panty thief who’s recently been stirring things up in Edo city stole her panties. To soothe her sister’s anger, Shinpachi decides to ask for help from Gintoki.
Guys... Think a bit more about the brother who has to see his sister's panties over and over again, will ya?
Piensen un poco en el hermano que tiene que 
ver los panties de su hermana, por favor.
Pessoal... Pensem mais no cara
 que tem que ficar