I was reading a book in the library as usual while guarding the library, but suddenly I saw a man come in to smoke

U-umm... Excuse me...

I wanted to scold him but I was shy and scared because the man was so big, but I gathered courage by imagining an anime scene, I then approached the man and scolded him

U-umm... Excuse me... You can't... You shouldn't smoke in the library... It's... It's... It's dangerous because it could... Ummm... Burn books and... Disturb other people... And... Cigarettes are also... Not good for your health...