Aquaman #27-Very Fine (7.5 – 9) 1st Full Appearance of Kimon Tanaka As Demon Gate

Aquaman goes to Japan to find Porm's murderer, and discovers that Captain Tanaka has become Demon Gate and killing Porm was his revenge on Aquaman; When Japan refuses to turn Demon Gate over, Aquaman forbids them to use the ocean and declares war.