1st pages :
- octopus alien : i will give you a tentacle-job , then i will give you a hand-job , then i will $uck you dry ... of your energy .
page 9 :
- evil-eyes boy : ... aira-chan , i killed 1 alien ...
page 12 :
- truck-kun : i will send you to an isekai .
- the dogū alien : oh yeah ? i will send you there instead , truck-kun .
last pages :
- evil-eyes boy : aira-chan , look out , the fat alien and the sniper alien are shooting me to death with their beams .
- pink-hair girl : enjoji-kun , you idiot , you yelled and distracted me , now the dogū alien is killing me with his missiles .
page 10 :
" ... cha ... shu ... " is a reference to the manga Ashita Tenki ni Naare of Chiba Tetsuya :
https://www.mangaupdates.com/series/oubavxa/ashita-tenki-ni-naare
maybe you will be confused this manga with Ashita no Joe .
the full word is chashumen = ramen noodle dish with chashu meat .
" To hit a tee shot well, Taiyo always calls out "Cha ... Shu ... Men" , which became a popular expression at the time. "
you can search the images with google with the 2 key-words : あした天気になあれ , and チャー・シュー・メン.
i guess this is the 2nd time that yukinobu tatsu makes a reference to a manga of Chiba Tetsuya . the 1st time is in chapter 63 , you can check out my comment :
https://forums.mangadex.org/threads/dandadan-vol-8-ch-63-school-life.1128024/