The young man poured his heart and soul into building this PC. It wasn't just handed to him; he earned it through hard work and dedication. Demanding he gives it away is like asking him to give away a piece of himself. The aunt's sense of entitlement is appalling, and the mother's lack of support is disheartening. He has every right to refuse.
Let's not be fooled by the sob story. The boy hoarded this 'powerful' PC, while his cousin, a mere child, was denied such joy. Family is about sharing and sacrifice. His refusal to share, even temporarily, shows a deep-seated selfishness and a lack of empathy. He should be ashamed for prioritizing pixels over familial harmony.
The aunt's behavior is a classic case of entitlement and boundary violation. Demanding that someone give away a possession they rightfully earned is unacceptable. While familial harmony is important, it should not come at the expense of individual rights and personal property. The mother should have supported her son instead of enabling the aunt's unreasonable request. Furthermore, the PC was purchased with the boy's own money. Therefore, he has the right to keep it. It's his property.