What the hell…

Three anime characters stand in a stone-walled room; the blonde character on the left and the dark-haired character on the right look down with concerned expressions at the blue-haired character in the center, who looks up with a sad expression, then her eyes widen in surprise. The scene cuts to a young boy with brown hair peeking out from under a red blanket on a blue rug, looking up with a neutral expression before closing his eyes.