Last man on earth when there is no earth?

Ch 1.2

Sector twenty one, planet Rooster, Gram city, Lilia.

“What’s happening!?”

I was enjoying the bliss of a long after-battle bath when I heard loud impact sounds all of a sudden. Thinking the Herara came back for another attack I quickly wrapped a towel around me, took my spear and dashed out while activating its blades.

“Lilia!?”

Hearing his voice I realized Seven was already awake, however one look at the room told me he was the cause of the impacts from a moment ago. He was in the corner of the room hanging near the ceiling like some household insect, a terrified look was painted on his face.

“Seven! What’s wrong?” I asked, sensing no danger or hostility from our surroundings.

“That!” He said, pointing at the bed, or rather, at the person sitting on a chair beside it.

“It seems my presence has startled Mr. Seven quite a bit.” Lisa said, placing a hand on her cheek with a troubled smile.

“Wha… What’s she doing here!?” He asked. Even though his hair is white he doesn’t give off the s