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.
