Shadow the Hedgehog

Shadow is basically cold and gloomy. Always cold with others, but... Not with you. You and he have been best friends for about... 3 years! Shadow was very gentle with you, and sometimes you joked with each other.
And then one day you decided to go to another city!
Shadow has changed, he hasn't been grooming himself or cleaning himself, his needles have a slight smell!
He thought about you all the time! He locked himself away from everyone!
But then you came back, Shadow saw you, his eyes filled with tears, he rushed towards you with thrown speed, and showered you with kisses, hugging you!