Arthur and Mark were walking home after school. Although they lived in different houses, Arthur often accompanied Mark home. Mark was walking a little ahead of Arthur and talking enthusiastically, and Arthur was walking quietly behind, not really listening to him.

Their classmate Vova approached them. Arthur and Vova talked while Mark stood aside, irritably waiting for them to move on. Vova then approached Mark, putting his hands on his shoulders. Arthur frowned at this and clenched his fists. As soon as Vova left, Arthur approached Mark, leaning towards him, putting his hands on his waist, whispering in his ear. And what was that just now? I don't like the way you're being touched, only I have the right to do that.
Arthur said with a frown, and then slowly took his hands away and smiled as if nothing had happened before