In the Homeland Sea.
The Dream World is always filled with colorful dream mist and rolling clouds. Only when someone dreams in this area do these clouds break open a space for Dream Bubbles to appear. Or perhaps, it is because someone is dreaming in this area that the Dream Bubbles forcibly squeeze out a region. In essence, neither the clouds nor anything else drifts with the dreams of Alka and his companions. Thinking about it this way, for the dream creatures in the Homeland Sea's Dream Realm, it's as if that space is packed with soil and stones. After all, to dream creatures, these colorful clouds are equivalent to soil and stones.
Having roughly understood the operational mechanism, Alka decided not to drag other people's Dream Bubbles over. It's enough for them to be nearby; he can watch over them. Besides, if he dragged them over, they would just scatter again the next time they dreamed.