Clash of Red and Black! (Invasion)
The nurse tells Conan that she just remembered Eisuke had surgery for leukemia when he was young, raising the possibility Rena may in fact be his sister.

Cast
Minami TakayamaConan Edogawa (voice)
Kappei YamaguchiShinichi Kudo (voice)
Wakana YamazakiRan Mouri (voice)
Akemi OkamuraRan Mouri (voice)
Akira KamiyaKogoro Mouri (voice)
Rikiya KoyamaKogoro Mouri (voice)
Megumi HayashibaraAi Haibara (voice)
Kenichi OgataHiroshi Agasa (voice)
Yukiko IwaiAyumi Yoshida (voice)
Wataru TakagiGenta Kojima (voice)Detective Conan on tvt

