So looking at the title: Literally translated “towa” is eternity, “yuugure” means dusk or twilight

Of course we now know Towasa is the name of a character, but the construction of her name means “eternity-ness”, i.e. “having the quality of eternity”

You figure that’s going to come in sometime.

While we’re on the subject of names, Akira means “bright,” “clear,” or “intelligent” (which he certainly is) and can also mean “wisdom,” “strength,” or “enlightenment”

According to this

The name’s etymology reflects core values in Japanese culture, where clarity of thought and brightness of character are highly esteemed qualities. Akira emerged from classical Japanese naming practices that often incorporated aspirational qualities parents wished for their children.