As stated elsewhere, if you have a problem with yuri then you'll probably want to avoid Kanamemo. If you don't, however, while at times the comedy can be very crude and "slapsticky" the series is very much in the style of ARIA. The humor is truly funny but is never hurtful, the characters may chastise, criticize, and scold but you never get the feeling they don't genuinely care about each other. To me there's an aura of kindness about the series and a respect by the production staff for both the characters and the viewers.