in translation i think its called something like; Freaky Family (or somewhere along the line :P)
i know want to know the name of the manga
used to read it back in the days (2000 LOL) ahh 7 years already...
some of the characters i remember from the manga are
a teacher that looks like bruce lee
poor kid called jin and his insane mother
a blonde chik that gets thrashed
hope i didnt break any rules posting this here