On a hot spring trip to celebrate my retirement from work, my boss keeps cumming inside me.

I ended up quitting my hometown after graduating from the company I had been working for so long. To celebrate, everyone in the department came on a hot spring trip, which also served as a farewell party. I am truly grateful to Director Matsuo, who has been helping me since I first joined the company, for preparing for my trip. And at the evening banquet, I probably drank too much, and before I knew it, I had become so drunk... I didn't notice at the time, as it was a training trip planned by the department head...