Based on the hair, that's definitely Subaru talking to him in the little flashback he has. In chapter 199 I didn't properly look at Tsuzumi's expression after Subaru said she has male friends. Back then, I thought it was some sort of curiosity. Now that I look at it properly, she looks more worried than anything Σ( ￣□￣||). I wonder if what happened in chapter 201 has anything to do with the question Tsuzumi didn't get to ask.
Based on the hair, that's definitely Subaru talking to him in the little flashback he has. In chapter 199 I didn't properly look at Tsuzumi's expression after Subaru said she has male friends. Back then, I thought it was some sort of curiosity. Now that I look at it properly, she looks more worried than anything Σ( ￣□￣||). I wonder if what happened in chapter 201 has anything to do with the question Tsuzumi didn't get to ask.