First story was... odd. The idea was interesting enough, but I feel like the story itself felt empty and without a direction most of the time. Some things were odd, perhaps the translation has something to do with it (I have a feeling the MC was rapping and ryming most of his inner thoughts, which can't have been easy to try to appropriately translate). Perhaps it was supposed to be more comedy-like.
I liked Waterproof (chapter 2), even if I didn't immediately undertake the title or, in fact, part of what the main character was asking himself.
Really liked Underground (3). Photographer with an unrequited love for an old colleague, who is quite famous and works abroad. He shows up in Japan again, going through some bad times mentally, and our MC supported him until his unrequited love gained the desire to go back, with a new and different determination. While it is rather sad for our MC, who once again lost contact with the man he loves and had painful moments with him there, there is some sliver of hope, for his love went back out into the world to take photos for him (and left behind a mystery photo, taken with the MC's camera).
Sakitcho Dakedemo