Can someone explain to me why the 4200 people didn't show up?
Kin emon told his group to meet at Tokage port thinking they should've meet there according to Yasuie's message, however he made a mistake reading the code(for the reasons Denjiro said) cuz they should have meet at hato(seawall).
Now I'm assuming the SHs were going to Tokage port (cuz they were with Kinemon's group which he told to meet at Tokage but they found the Sunny damaged so they needed some time to repair it.
The other Samurai should technically be on their way to Onigashima they just departed from Hato and not Tokage so probably they should meet at some point before attacking Onigashima.....