The provided text appears to be a personal reflection or essay written by a student expressing their affection for their sister. Key characteristics, such as informal language, personal anecdotes, and emotional expression, suggest that this text is more likely to be human-generated. The casual mention of video games and familial relationships aligns well with the writing styles commonly found in young students' work. Additionally, the structure is straightforward and lacks the complexity or peculiarities often associated with AI-generated text, which may include overly formal language or disconnected ideas.
In conclusion, while it is impossible to definitively ascertain the origin of the text without additional context, the emotional depth and personal anecdotes indicate a high probability that it was written by a human, reflecting genuine feelings and experiences rather than being generated by an AI.