Source from yangti1674
Interview with Gosho concerning the names in the mermaid guestbook, including Gin's. Love Conan
Fujiwara: Just real quick then: Gosho says that the name Gin comes from Kurosawa Jin and that that name is actually written next to the one that sounds like Vodka. He's asked how many people are in the org -- many. Is the boss Japanese since the text messages are in Japanese? Vague answer about people being very attentive. The Gin/guest book thing then follows from a remark (by the interviewer) that Gins mother tongue is also unclear.