Hmm... Hiiro will get along with Jun easily. They're both "muscles characters" who bond over a shared interest in physical activity/working out. Izumi on the other hand, I'm not sure. I think Hiiro and Jun could be a breath of fresh air for Izumi who is used to dealing with pushy people in his unit. Hiiro is pushy in his own way, but he's respectful to his seniors and excited to learn from them. I wonder if Tsukasa will somehow be brought up in their conversations, like if Izumi will compare Hiiro to Tsukasa? They have some kind of one-sided rivalry on Tsukasa's end, so I wonder if that could come up. I feel like Hiiro has totally stagnated especially within Alkaloid, so I hope TearS has some kind of real story that does something for him.