When Master Splinter died a few months ago, Leo,Raph,Donnie, and Mikey live alone. Raph goes to train with Leo while Donnie works on the shell raiser and Mikey playing video games.
Raph: Leo want to go train so you can get stronger
Leo: Not now I don't want to miss my show
Raph: Looks like I am going to be a better leader than you one day. So what do you say in or out.
Leo: Fine but that doesn't mean that you will be the next leader
Meanwhile with Donnie and Mikey in the lab
Mikey: Donnie wanna play with me and ice cream kitty
Donnie: Not now Mikey I am trying to fix the mutagen so it won't mutate people
Mikey: Fine no wonder your the brains of this team that doesn't have fun with his brothers
Donnie: I can't right now
In the dojo
Raph: Oh Leo, ( I had feelings for him since Master Splinter died and I don't know when to tell him yet) Ready
Leo: Ready ( I like Raph but I haven't told him yet because he might think that I am gay but I'm not) Lets go Raph
