Comment by Jjjj on Hotaru no Yomeiri - Chapter 79.2

I don't think she's alive. My theory is a she actually died and that he actually read the letter and this is his last hallucination before he die. I think that this is him dying instead of her being alive. I think he's just trying to visualize her the last time how he remember her so he can die with her memory. Because that will explain the last panel, which is the house in the wood so I think it will represent like this is the last fraction of humanity that he has left, which is her in which he is not human anymore he's a ghost because he's just walking around at this point, and the only reason why he didn't kill himself is because she didn't want him to die so in the process he became a living ghost and now that he's close to dying, he decide to go back to what his house was with her. So he's dead now this is a happy ending, but it's a sad happy ending because now they both dead