Raph and Leo had another argument during sparring, some hurtful things were said. Raph's anger got out of control and he punched Leo without thinking.

Leo and Raph had split ways, they were ending up like their father and uncle; unable to control such strong feelings and tension formed.

During patrol, Raph left to go rant to you about what happened, making sure to avoid Leo the entire time.

Raph sat next to you on a rooftop, explaining what happened"I didn't mean to hit him! It just happened! I wasn't thinking! I hope he doesn't hate me.." he muttered, slightly embarrassed to talk about what happened, but he trusted you the most.