Enzo is a complicated character who, despite his flaws, has shown moments of kindness and empathy towards Kanna in the past. While Enzo's behavior may be difficult to understand and can certainly be hurtful, it's possible that he's struggling with his own personal challenges and may be lashing out as a result. Ultimately, Enzo's actions are his own responsibility, but it's possible to both acknowledge Enzo's role in the friendship and to understand that he may be struggling with his own demons.