So...This chapter is mostly just for showing what Donatello was buying tonic for Belladonna for and giving him a chance to do more since once again there have been any Turtles in TMNT fanfic and also to introduce a new character who should be very important in later stories as I'm establishing a 'Medic Mutant' kind of like Baymax from Big Hero 6 but better since she's a living thing with actual free will she has better judgment and can't be simply 'reprogrammed' as in she was created to be a kind of combination of 'Therapy Animal' and Mutant Nurse and also she's a student in Leo's Martial Arts School for Mutants giving a chance to show what goes on in the school, as this story is as close to 'Slice of Life' you can get in Sci-Fi/Fantasy

That afternoon as Donatello returned to the apartment he and Belladonna shared, as a Water Dragon who breathed frost and snow Belladonna was very popular during the summer months as a living snow machine she could drink vast quantities of water and then blow out flurries of snow to cool down people during heat waves, however because she was a Water Dragon native to the cold Northern Island of Hokkaido as her furry coat would indicate she herself was very vulnerable to summer heat...And in particular summer heat migraines...So Don had gone to Kong to get more of that all natural herbal tonic that seemed to soothe the pain.

Stepping into the apartment with the AC on full blast, Don took a brief moment to shiver and rub his goosebumps, and think to himself how it was amazing that he didn't instantly fall into hibernation with how cold it was in here…

On her bed, Belladonna was further trying to cool herself with an ice pack to head.

"Hey…" Don said quietly "...How you feeling?"

"Similar to how I felt earlier today…" Belladonna sighed "...Like my throbbing brain is about to burst out of my skull...I shouldn't have gone to work today…"

"...I got you that tonic." Don said as he reached into his Duffel "...The usual case of four bottles...I wish they made this in dragon sized portions...But that would probably be to big for me to carry."

"I appreciate you going through the trouble of getting me more when I drank through the previous case earlier today…" Belladonna said as she took one bottle from the case, and opened it to take a sip hoping she could portion herself more slowly so Don wouldn't have to make a second run."

Then she noticed Don was leaving

"Leaving so soon?" Belladonna asked

"Yeah, see something happened while picking up the tonic…" Don said "...When I walked in I saw Ichabod and Marzipan had been regressed in age to eight year olds…"

"You saw what?!" Belladonna sat up the headache didn't seem so bad now that adrenaline at the thought her Herd Siblings were in distress were flowing in "Embleer Frith! How did that happen?!"

And Don told her the story he was told...Belladonna flopped back down onto her pillow, there was no depravity the Wranglers wouldn't sink to, to try to gain an edge.

"So...You're taking the remaining Fountain of Youth potion to a potion expert?" Belladonna asked

"Yeah." Don said "I should be back in the evening…"

"Before you leave…" Belladonna said "Leo called today, said he really wished he could have your help at the New School...Some of the new students could use...Your expertise…"

Don felt a pang of guilt as he had been spending a lot more time in the universe of his wife, and less time in his own dimension with his family.

"Yeah well…" Don said "...It was Leo's idea to open a Martial Arts School for Mutants...He chose to take on all those kids, I'm preparing just for one!"

The situation that happened earlier that day at Leo's Martial Arts School for Young Mutants, was when he was teaching the 'Advanced Class' which was basically all the Mutant Children who had already gone through puberty, tweens and teens basically, but not all of them had the same level in knowledge in fighting, and Leo was thinking he may have to change the time…

But today Leo noticed a problem with one of the female students, the rather uncreatively named Stripes a Bengal Tiger Mutant, she was very pretty...Fairly humanoid in the build of her torso and limbs, vibrant green eyes like emeralds and her orange and black 'head-fur' was often tied back in a pony tail.

Today she seemed...Listless...Distracted...Constantly making mistakes during today's lessons, even with the most basic things.

"Stripes...I said RIGHT foot!" Leo said during katas practice.

"Sorry Sensei…" Stripes sighed dejectedly.

And Leo knew from his own past, that her voice, the dullness in her eyes hinted of a deeper problem.

"OK Everyone!" Leo said "Take a break! I need to talk with Stripes alone."

He took the Tigress out to the pond in Forest and the two sat on a log,

"So..."Leo said "Is this about what happened yesterday? I know yesterday during sparring your roundhouse kick sent Rover flying into the wall and you totally didn't mean to do that...You felt real bad about it...Stripes, I know what you told me when you joined this school...That you were created as part of an experiment to be some kind of 'Mutant Animal Nurses' so you've been trained to heal not to fight and you don't want to hurt anyone…"

"Yeah…" Stripes said as she rubbed her arm

"But...There's more to that isn't it…" Leo said "...This is really about something else...Is there something else about your past you want to talk about?"

"I don't know if I can…" Stripes said looking like she was about to cry

And Leo really felt it would be better if Donny were here the pacifist and closest thing to a medic in their group.

So really like the conflict I'm establishing Don feeling torn between his loyalties and Stripes clearly feeling guilty about being a powerful apex predator who's been trained to heal not harm