Anime couple in a wedding dress hugging in front of a stained window

1 man (demon lord, demon horns, black hair wearing tuxedo) and 1 woman (succubus, demon horns, pink hair, wearing tuxedo), holding hands, loving each other, detailed eyes, detailed face, detailed outfit, the background is dark old mansion, full body illustration, absurdres, highly detailed CG, Makoto Shinkai Class production