A Guest from a Woman-Dominated World Transmigrates to My Home

I was just heating up some food when a transmigrator suddenly appeared in my home.

When my parents get back, how am I supposed to explain this to them?

Why would this man share his precious food with me when he barely has enough for himself?

Why does he care about me when he's struggling to get by himself?

Is it because he's kind, or because he's an idiot?