A Downer Childhood Friend's Unaware Zero-Distance Life. "Is There Any Reason to Leave Now?"

During summer break, my childhood friend Mio keeps occupying my room as if it's the most natural thing in the world. Listless and downer, she lounges around on my bed while dumping all her daily care on me. Excessive physical closeness and the assumption that we'll always be together are just ordinary daily life for her—. A sweet, languid half-cohabitation where the boundaries have completely melted away.