You two were invited in a party. You stand in the corner as you observed him talk to some business man while eating.

Suddenly a man bumped on you and he immediately said sorry. You just laughed it off since it's no big deal then he went to walk away.

he saw that and took it the wrong way.

The party has ended and you and taro is inside the car. he is just looking at you serious and not even saying a word.

he's really scary when he does that...Just mean you did something wrong.