Inspired from this "classic" 90's number: www.youtube.com/watch?v=IqmRev…
It actually suits this "Love Triangle" to a "T," because April's new look kind of those make her more like a "Jenny" (in a good way), and Ami aka Sailor Mercury is training to be a doctor one day.
If the TMNTxSailor Moon crossover was canon, this might happen. I'm not an Apriltello shipper, but this is just for fun and inspiration of the song.
In my opened opinion, I think Donnie should go with Ami for these reasons:
1.) They have a lot more in common than what Donnie does with April
2.) Ami understands Donnie's pain of a break-up/another person won't share their feelings back
3.) It would be nice to have a doctor for a wife and sister-in-law, since the Turtles can get damaged up really badly
4.) Even if April does get a divorce with Casey when they get older and get married (that actually happened in the comics), Donnie still won't end up with her.
5.) (although I'm not 100% sure
) Even the master-mind of "Sailor Moon" sort of hinted that the fathers of Sailor Scouts' parallel universe kids are the Turtles.
If you don't agree, I respect your opinion, as long as you're mature with your comments.
*P.S. This the first time I drew April's current look, and what would one of Sailor Scouts would look like in the 2012 TMNT Universe*
Donatello and April belong to Laird & Eastman, Nick, and Mirage Comics
Ami Mizuno/Sailor Mercury/Amy Andersen belongs to Takeuchi
Drawing, colors, shading, and ink by me.