Doom: My companions are from the 3D zone

The twelve-year-old boy Lip suddenly travels to the ultimate doomsday dimension, where zombies, monsters, aliens, and dangers are everywhere.
Fortunately, the summoning system has been awakened.
Chun-Li: "Why are your legs so thick? Do you want to know more clearly?"
Mai Shiranui: "Brother! Didn't you say you would marry me?"
DVA: "Come into my arms, I'll teach you how to drive a mecha~"
Jerusalem Tifa: "Tell me about you, I want to know everything, everything~"
That's not right! Why are all of them in 3D area?