Child-on-child sexual abuse

Child-on-child sexual abuse, frequently shortened to COCSA, is a form of child sexual abuse in which a prepubescent child is sexually abused by one or more other children or adolescents, and in which no adult is directly involved. While this may include one of the children using physical force, threats, trickery or emotional manipulation to elicit cooperation, it also can include non-coercive situations where the initiator proposes or starts a sexual act that the victim does not understand the nature of and simply goes along with, not comprehending its implications or what the consequences might be.

Source: Wikipedia — Child-on-child sexual abuse (CC BY-SA 4.0)