“…”
He goes to look something up, then comes back with a piece of paper.
As the Fifth Doctor once explained to Turlough, parallel universes were a specialised form of alternate universe — “alternative universes [that existed] in parallel with each other” — but the terms weren’t complete synonyms. A parallel universe had no impact upon another parallel universe; it was “separated only by a millisecond of time and a nanometre of space, without ever having contact.” Conversely, a fully alternate universe was when, because of the inherent weakness at the point that one universe split from the other, one timeline actually destroyed the other. (x)
“See? Even with that, tantei-kun and I shouldn’t know each other if he’s technically in my other self’s universe…”
Moonlight Archive 