just reading the synopsis... gotta ask the question "why does he wanna train his disciples again?".. guess ill give it a try
add: at ch20+ now... meh he's just rushing so much... beat the crap out of everyone and move on. its okay to a point but not for the readers who want more story and details.
like the story.. pretty chill and real (sort of)...
please look out for
convenient (brushing teeth), and
feel (train station, invitiation)
also... is it Mech or Meck? lol this is being nitpicky