[doesn't really. know how to react, to comfort him. to be too sympathetic with the situation, probably isn't right since it's not Mitsuru's memory, and Mitsuru probably doesn't want to connect to that memory at all, if he can help it, and... it's not like Hakuba, but...
stops cleaning the fish for a moment, to put a hand on Mitsuru's shoulder.]
That's... really awful. To get a memory that's not even yours, and for it to be something like that... The feelings must have been really strong, you can't ignore that kind of greif easily, even if... even if it's fake.