Tensei Shitara Ore ga Heroine de Aitsu ga Yuusha Datta - Vol. 1 Ch. 3 - The Other World is Also Cruel

[MangaDex]

 

[huynhvonhatan]

On page 5 it might be a dating sim joke. The demon lord cruise is like a honeymoon/date/vacation for the hero and the heroine, the hero asked the heroine out but there’s no affection point gained.

 

[Simpleton]

300 gold for a beer? Ah, it's another "1 gold coin = 1 yen" manga

 

[RattSmackk]

Azu, I know what you are...