After being apart due to the war with Ersha, Tolrek is able to see Darion again in Vaironian Tides, Chapter 27. Here’s an excerpt:
Tolrek had requested special permission to take leave from his duties. No matter how much Darion tried to shut him out, he was determined to check on his lover’s health. However, Darion was refusing even to look at him.
Kouta and Ryuu have a brief encounter, which is a precursor to more, in Balance, Chapter 22. Here’s a portion:
They ordered their food, having a quiet conversation about the weather, work, about everything but the most important issue. Often, Kouta locked eyes with Ryuu and so much raced through his mind. There were many things he wanted to say. He sensed Ryuu was feeling the same. This wasn’t the time or place. Yet that didn’t matter to Kouta. Right now, despite his confusion about our situation, being in Ryuu’s presence was enough.