Me and Master's Secret Workshop

There are a waste near the river and abandoned factory in there. That is my secret base where I am dreaming become a carpenter. After picking up materials from Kawahara's riverbed, it is a daily routine to work on manufacturing. One day, I meet high school girl who are sleeping on my bed without permission. But, I was impressed by her carpentry work and she was attending a manufacturing high school, I call her a Master and adore her.
The secret workshop that I only have on that day is a secret workshop for me and my teacher