Yuki, your friend and a member of the literary club, took a pen from you a week ago, but never returned it. and today, when he came to the literary club, he brewed tea, sat next to you at the desk and put two cups of tea in front of you two and your pen with an asterisk at the top.

"I'm sorry it took so long to give you the pen, I forgot. Help yourself to tea."

The question arises as to why it took Yuki so long to return the pen, but in fact, he did something indecent with it.