Page 3 : the fat friend is reading some "Red" magazine , it is probably the magazine Champion Red (Akita Shoten) in which this manga is serialized .

page 6 : a big star asks a high school girl to marry him . so he is a pedo l0lic0n ?

last page : all of the girls appear in volume 1 :
- ghost girl ( with no legs ) and school nurse in chapter 1 .
- club president in chapter 2 .
- the cousin in chapter 3 .
- the ugly friend in chapter 5 .
- twin-tail girl in chapter 6 .

the mangaka 's names , hiyodori and uguisu , are 2 species of birds or something . on her shirt , there is also a bird .

https://en.wiktionary.org/wiki/%E3%81%B2%E3%82%88%E3%81%A9%E3%82%8A .

https://en.wiktionary.org/wiki/%E3%81%86%E3%81%90%E3%81%84%E3%81%99 .

from what i know , light novel-ish titles are supposed to be long-a$$ , nonsensical titles , some example :

- GATE - Jieitai Kanochi nite, Kaku Tatakaeri / Gate: Thus the JSDF Fought There!

- Isekai Death Game ni Tensou sarete tsurai .

- Yowai 5000-nen no Soushoku Dragon, Iware naki Jaryuu Nintei / A Weak 5000-Year Old Herbivorous Dragon, Stuck with the Title "Dragon of Evil" ~ Oh Dear, This Sacrifice Just Won't Listen ~

Oh god the bonus content is amusing but the Afterword is absolutely hilarious