Is Sera's Brother Shukichi Haneda? I've just read the newest Detective Conan comic online. There's a case when Yumi calls Shukichi and Sera call her brother at the same time. When Yumi talks to Shukichi, Shukichi holds their conversation because someone else is calling at the same time. Sera calls her brother but Sera's Brother also stops their conversation because he is in an important call with someone. So, does that mean Sera's Brother is Shukichi Haneda?
At this time unless and until canon says otherwise, it is reasonable to assume that Sera's brother is Shikichi Haneda.  However, Gosho Aoyama certainly knows how to mislead his readers, so it's definitely not a sure thing as far as I'm concerned.  See also Shukichi Haneda