>>3317210Nevermind found it.
Reposting for later.
Title: "Who will be on the cover of volume 7!?"
Fuutarou: "They've all had their turn so surely I'm next!"
Sign: "Uesugi Fuutarou"
Arrow text: "Volume 7 cover (imagination)"
SFX: *shine*
SFX inside image: *serious face shine*
Raiha: "The title is "bride", big bro!"
SFX: *smile*
Side text: "Wow, it's disgusting, big bro!!"
Sign: "Uesugi Raiha"
Raiha: "That leaves me!"
SFX: *humphs!!*
Raiha: "Big bros around the country, thank you for waiting!"
Fuutarou: "You're the "little sister", aren't you?" (as in, also not a "bride")
SFX: *kyaruru-n*
Fuutarou: "Pfft, too bad."
Raiha: "If big bro appears on the cover, the sales will drop!!"
Arrow text: "An ordinary quarrel between siblings."
Nakano Papa: "The next cover is mine!!"
SFX: *steps forward*
SFX: *papa-n*
Raiha: "No... Nooo!!"
Side text: "R-raiha's cover..."
Side text: "Ku ku ku"
Sign: "Nakano Papa"
Fuutarou: "You've got to be kidding me!"
It feels weird translating "onii-chan", but I might as well be consistent with the scanlation team.