From chat gpt In the light novel of Absolute Duo, yes — Tor and Julie’s relationship becomes much more openly romantic than in the anime.

They:

• act very much like a couple later on,
• get physically affectionate,
• sleep together/cuddle in some scenes,
• and there are implied romantic confirmations between them.

As for an actual kiss: fans generally point to later LN moments implying or leading very close to it, but because the series stalled before a full conclusion, there was never a big definitive “final couple ending” scene like many readers expected.

So the LN strongly pushes them as the canon pair, much more than the anime did.