Day 19  自分があまり賛成できない常識 

Day 19 Common sense that I cannot fully agree with

Common sense in Japan, especially at school, makes people refrain from sticking out to get along well with others among crowd.
That will ruin abundant individuality of students, and I cannot agree with this type of common sense.
You don’t have to obey without discussion, and it’s totally OK or rather good thing for you to tell others what you think にっこり