This story is awesome. I can totally see this as an actual episode, and it would’ve been awesome if it had been, but it’s cool enough just as a fic. This is one of the rare fics that are so good and accurate to the source that I would count it as canon.

Great story, I highly enjoyed it! Please add the bonus chapter, I need more! You are an awesome author, I had no idea that you weren't English. Keep up the good work!

Such a beautiful ending!Thank you so much for writing and posting this! I have enjoyed every bit! And I hope to read more!
Please post that bonus! I’m curious to know what it’ll be about! Besides, some more intense lab scenes would be perfectly fine with me! ;D

I like how you showed us what happened during that empty time when Leo was unconscious. It was very enlightening! And interesting!
Poor Donnie! At least, poor original Donnie! He’s coming back! And now he feels all terrible, and will be guilt tripping, and has to deal with all this aftermath of emotions.. But good ol’ Raph! He made me really smile! Being there for his bro’ me so happy! I hope Donnie talks to him later...
really great chapter! Can’t wait to see how this ends!

I don’t think it’s that bad. There isn’t much detail, and the operation doesn’t go on for very long so.. I’d leave it. I mean, other than the scene being very creepy, and somewhat disturbing, the rest of the chapter makes up for it!
Smart April! She really knows how to cheer Donnie up! A good brain game that doesn’t involve, saws, needles, algae tanks, or bolt guns. That’s exactly what that turtle needs! Maybe Donnie’s finally coming around! I’m so excited!

Oh dear! What’s going to happen! Such a good story! I can’t stress how amazing it is! Loving every minute!

Oh man. Donnie’s still wacko?! This ain’t good! I hope he gets better! I hope all of them get better... But even if they do, the emotional and mental scars will never fully disappear. There will be many struggles with this I’m afraid..
No, I didn’t notice! And that’s kinda crazy that you didn’t notice either! The telltale sign of a brilliant writer! ;p When even your subconscious thinks in plot! XD

I was on the brink of a panic attack the whole time I read this chapter! My heart was beating at about the rate of a hummingbird’s wings, and I my breaths were short and winded! LITERALLY! I was FREAKING OUT! Dude! You really know how to get the adrenaline going! (Okay, calming breaths now! Calming breaths. It’s almost overinhales and exhales shakily, with effort*
That’s so cool that you’ve experienced something that you’ve written about! :D
Can’t wait to read more! xD So pumped!

So good! Really interesting about the chair and knife experiment XD My heart hurts for Mikey! But I was going crazy reading about Raphael’s reaction! Major shivers! And then it was gone.. was a little disappointed..was really expecting a Donnie beat down from him. But hopefully April will knock some sense into the crazy turtle!
Seriously, so good!
Grammar note, might want to reread this chapter. Nothing huge, just a few weird sentences that could use some cleaning up. (Again! Please don’t kill me!)

Poor Leo! I gagged. Poor Raph! I literally held my breath! Sweet Mikey! So naive and helpful at the same time! You can’t help but love the turtle! Oh nooooo! April! This isn’t right! Donnie’s going to be scarred from this for the rest of his life! Argh! This is terrible! But. I. Must. Keep. Reading..!
Grammar check! 1} when Leo’s talking to Mikey about Raphael’s outburst he says, “if this is what he needs to take his mind of the pain..” I think you meant “off”?
2} when Donnie is talking to Leo while pointing at the turtle anatomy chart he says “What I’m essentially trying to do here is to find a way to turn people that’e been mutated...” Yeah. I think there needs to be a ‘v’ in there... (please don’t kill me!)

Aaah! Nightmare Donnie over here! He may be getting quite unquote “smarter” but he sure does over look a lot of these general simple logic stuff...
grammar catcher alert! When Donnie tells Raph it’s for his good, you wrote ‘you’ instead of your. (Don’t kill me!)
There was another one near the end but I can’t remember what it was exactly... Hope that helps! Loved the chapter!
0_0 No. no lollipops.. I’ll pass... *steps away slowly before bolting out the door*

This chapter is SO GOOD! I mean, in a bad way, but the medical information is really accurate! I’ve had to look up many a fact in the medical field for stories pertaining to Donnie’s intelligence, and I personally became oddly delighted when you used the term hypovolemia! Very well done!
0-0 WHAT THE SHELL?! Raph?! I can’t fathom this! NICE 49.8 DONNIE! You almost KILLED YOUR BROTHER!

Mikey should’ve just gotten away! Now they’re both in a jam! Argh! This is so good!
As for grammatical... When Donnie tells Mikey how much blood he has, I think you meant to write 1.2 gallons. Instead of 1,2. Just thought I’d point it out. And I’m not trying to be mean or a snot! You said to point out anything, and that’s just something I saw! I just want to be helpful! I wouldn’t have said anything if you hadn’t said anything.
Really great chapter! Can’t wait for more!

Holy sewer cakes! This chapter is giving me serious shivers! What’s going to happen to Leo?! What happened to Mikey?! What will Raph think? Where are they?! The lab? Some place in the sewers that Donnie designated as his new experimentation laboratory?
I liked the scene with Leo and Raph fighting over the remote. It was so perfect! Laughed so hard!
KEEP WRITING MORE!

Uh oh. Not good. Fumes are never good. Wake up Donnie!