Satoko Shirogane(Vanadium) and Yoshimi Amanogawa(Titanium)
Twin sisters with different last names due to their different Elements and sharing Period 4.
Satoko handles Anaesthesia Bridge Academy's affairs as their lead Teacher and Doctor, while Yoshimi leads Amanogawa Academy as the founder and Samurai Master
As Satoko busies herself with Anaesthesia, her son and his friends, Yoshimi wonders if the Pythagoras and Palladius Academies' Cyber Body technology is well-known to the public eventual thinking if her sister acknowledges this issue.
Ever since Amanogawa's foundation, Yoshimi adopts the Students she saved from the extreme Project and train them to "reclaim their lives". Though the public eye questioned her methods, Yoshimi remains to make her Students stronger than the world against them. The Students appreciate her efforts more positively, if not compare her as a mother.
Yoshimi herself has Cyborg legs due to her fight against Lily(Radium)'s poison killing her natural ones. And made sure she could handle Palladius's Cyborg technology by making her own version for her new Students(majority needed the Cyber Parts due to Sanso's incident)
Nowadays, she tends to worry about Satoko since the Doctor's lack of information about Palladius's technology. And the Academy may need assistance due to a Wanderer making trouble in both Pythagoras and Palladius
Other than that, she is concerned about how much an Atomian can handle such advancements before they lose themselves, potentially killing them in the process.
The Queen of the Milky Way has always seek the future above the stars, wondering if there are others like her beyond the horizons.
Her stars reach for the goal seemingly impossible for a normal Atomian could commit.
"Live for those who once lived"
That may be "the role of a Student and Teacher" they talked about all the time...