Twins? Nah.

A blonde-haired character smiles contentedly in a close-up, followed by a grey-haired character with a gentle expression against a pink background, then both characters appear in a split-screen with exaggerated, wide-eyed expressions, before the grey-haired character laughs joyfully while the blonde character turns away, and finally, a close-up of a character with intense, glowing eyes is shown, followed by a group of characters walking down a city street.