[Oh no. Tsuna's gaze drops a little, thinking about this for a moment. He feels sadness for him; he knows what it's like to lose people, as does practically everyone here. It isn't an easy thing to deal with] I'm sorry to hear that. I hope he's alright.
You seem to be very concerned about them though. Perhaps you should go find them..? [He won't be selfish and ask him to stay if there are many things on the other's mind, people he should probably be with more than him right now]