Yes, it's less as an implication and more of a parallel.
The similarity is that both gems have an adoration towards a protective, fatherly figure that borders on obsession. Sensei, unlike Aechmea, isn't willing to indulge it too much, and even less to turn it into something sexual.
What's true is that even Antarc used to depend on Sensei a bit too much, which in the end was the cause of his demise: the same might be true in the future for Karen.>how was Sensei the cause of Antarc's death
He let himself get baited by the arm (that got taken because he got distracted by the noise from the school) because he feared he'd forget about him. Confront it with Ghost who had his hand snapped in similar fashion and used it to bait the lunarians themselves instead.
In the end, it was Antarc's last wish that held Phos back as long as it did (he never even wore the white uniform because of >>184062553
), seeing as he tried everything in his power to avoid confronting sensei. The moment he moved on, he was already deeply changed.