Fan Casting Peer Pressure is Bad in Sort by Tropes

A protagonist has found a new group of "cool" and powerful friends, although their advice/behaviour are detrimental to the protagonist's established relationships. Often the peers will start out just being inexplicably really nice and friendly, encouraging positive virtues for questionable reasons. These new friends begin with encouraging gray morality activities, but the plot usually extends to clearly immoral/illegal activities. The protagonist, under the peer pressure and their hopes of winning more approval, commits more and more questionable acts until An Aesop is learned.