Koyoi mo Meshimase Alicetale

The protagonist is a university student with a part-time job, living alone. One day, he receives a mysterious, cross-patterned trunk from his parents, who are currently working overseas. Attached is a letter with a duplicate key. Confused, the protagonist opens the trunk and finds a girl sleeping inside... [Translated from [url=https://www.dlsite.com/pro/work/=/product_id/VJ002419.html]DLsite[/url]]