
sorry for late reply, haven't opened mangago in AGES! Anyways, Tristan leaves because he feels if he is by Ethan's side, smth bad might happened to Ethan cause yk he was still a part of vampire hunter's thingy. So, he leaves for 2 years, he went to Ethan cause he was in heat I dunno but they did bond right? so Tristan went to save his man. yeah thats what it was about.
When Tristan went to save Ethan, old fuck saw through CCTV had confirmed that Tristan betrayed the organisation and asked his guardian vampire to bring Tristan back.
we don't know how he will bring Tristan back but lets see how story unfolds.
Did they ever show how Ethan was saved exactly? Wasn't he held hostage by the uncle?