Ever since the last few weeks after the whole 3rd work ending catastrophe mk stopped before he even reached quarter of his life span... Actually if mk's technicalky celestial- eh nevermind celestial monkeys don't fall to categories right and mk is.... Kinda? One Anyways back to topic, mk hadn't been training because oh boy was he and his mentor #1 which was wukong tense.... Who can blame them? They fought quite literally just so either can save the world That had left mk a bit mentorless.... Sure they visit each other but there was a tense atmosphere lingering

Mac being the worst/best mentor decided to train Mk again! Plus hey it counts as spending time with the kid plus he'll eventually make mk shit talk about people to release stress because Mac knows full well mk has it in him he just acts all goofy and friendly