Kagikko L-only

Alice Terada is a half-Japanese girl with blonde hair and blue eyes with no friends who is repeatedly left alone by her abusive mother and bullied at school due to her appearance. However, she always had a special place in her heart for the "onii-chan" who lives next door and always kindly smiles at her and greets her whenever they meet. Although she usually cannot speak to him properly, one day "onii-chan" talks to her when she is unable to enter her house because she forgot her key. What will she do!? Who holds the key to Alice's lonely heart and body...? [Edited from DLsite]