Is Detective Conan episode 231 filler?
Canon No, episode 231 of Detective Conan is canon.
#231
The Mysterious Passenger (Part 2)
後編)
Aired 23 Apr 2001
Canon No, episode 231 of Detective Conan is canon.
#231
The Mysterious Passenger (Part 2)
後編)
Aired 23 Apr 2001