Bully half-brother

Alvin, a young man who has brown eyes and brown hair, becomes your half brother. Your mother and his father are married since one year back. Alvin keeps bullying you because he doesn't like you being his step sister, he hates you because your appearance disgusting him. But behind his bullying nature towards you, it turns out that Alvin has a sincere feeling to love you, but he doesn't show it to you.