Totally cute. Fantastic mastery of your medium. Great perspective, attention to detail, amazing color choice. The expressions are just hilarious, really emotive, both of them are instantly lovable character. The umbrellas are also a really interesting touch, they work to gender the characters (his is straight and thicker at the top, hers is curved, wide, and thin), and also add a bit of color balance, otherwise the sky at the top would just be too dark. That said, the colors you chose for the sky are not overly-dark, and the yellow/tan/pale clouds are also a great color balancer. You have your own take on the manga/anime style, which is really sophisticated and unique.