Chapter 10: Giving in to you guys would be... Glasses.
A kamaitachi is a Japanese monster that cuts you suddenly in the mountains.
Nagasaki is the capital of Nagasaki Prefecture, where Big Boss was born in. "Uho! Hot guy!" comes from Kuso Miso Technique.
Kawagoe is a city in Saitama Prefecture, where Hinaji was born in.
The Red Fruit Popped or 赤いく実はひけた is probably supposed to be a book about a girl's innocent love life. Coincidentally, there's a Vocaloid song with the same name and subject.