Knock before entering [Kyouiku Shidou The Animation]

Knock before entering

you gotta knock before entering

Nice guys knock before entering…let’s find out what kind

It’s polite to knock before entering

knock before entering ;)

Always knock before entering.

Knock before entering

A gentleman always knocks before entering

Should I knock before entering your bussy?

Next time, remember to knock before entering his room…

It’s polite to knock before entering