Just an observation here... Cologne kicks Ranma out of the Nekohanten 
just because Happousai blew it up? Also Cologne should have been able to 
stop Happousai; she is supposed to be an excellent martial artist. (And 
when the first bomb exploded in Happousai's face it should have knocked 
him out; see the first Ranma Movie when Happousai uses a bomb on 
Bishamonten who was guarding the first castle gate).