Chapters 13 - 16: This volume was another fun addition to the series and introduces another brother from the Mikami family, this time it's the oldest brother and he also likes Natsume so it was entertaining to see all three fighting about her with her being unaware and he left after 2 chapters. I am curious to see what will happen next.
Another brother has shown up…I think he’s a bit more creepy than Sou-Chan. There was also a panel (I think on page 65) that had him with an unnaturally long neck.