i don't personally like the 2nd couple. i am not fond of fuck buddies, might be because of the traumas other mangas has given me. it's either that one of the character in this relationship had a bad memory behind it that's why they're settling to being fuck buddies. (they didn't end up together - fuck buddies)
adopted/sequel to Kemono wa Okumade Aisaretai but I didn't bother to read that one because of the comments and reviews. if you want, you could read it first then this one after.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Marry you? Yes, I will!