Heyo! LGWolf here! the creator of AIAFA or the other 2012 au in the Tmnt comp and I found out about yours and thought the same thing for them seeing Leo. They do have a Raph but Leo is out of the picture here. Just a heads up lol, cool to see another 2012 au!
Oh that is so beautifully tragic. I went ahead and read your fic to get a good idea about what's up with your boys. There's so many layers to this. Thanks for the ask, good to see other 2012s hanging out in the @tmntaucompetition
Like, my boys are physically okay. Yours are all together. Some of mine still have hope that Raph is alive. Yours are younger.
If my Leo had his way, he would have been the one to sacrifice himself instead of Raph, so seeing your boys would actually give him pause. Hed feel pretty guilty. (Despite Raph being 20 when he lost him, in Leo's mind he can't help picturing him back in his teens. To be faced with a Raph like that again, broken and bruised like in his worst nightmares, minus the ones were he is dead, would shake him to his core.)
Mikey would have complicated feelings. He's the most social of my boys, the only one really with a social life. So he would do his best to not overstep, but he would want to comfort and care. He's not going to put his own issues with his family on these kids. (He tries not to look to hard at Raph. It Feels weird for him to be older and taller than him. (Tries not to think of how he had started to forget how Raph looked, how his voice sounded)
For Donnie it would be weirdly affirming? Like he would keep to himself, and mostly ignore them (probably for the best, my Donnie is a bitter ass most of the time). He kinda blames Leo for what happened, for leaving them, for their family falling apart. So seeing them all together with Raph would settle in his gut like a rock