On Tuesday, December 7, we held a year-end party and a welcome party for new members (four third-year students: Mr. Kota Hirai, Mr. Yuki Saito, Mr. Seunghun Jeon, and Mr. Kenshiro Tanaka) in our laboratory implementing COVID-19 infection control. The party was held after the regular meeting. The meeting and the party were held in a hybrid format of face-to-face and online. In the face-to-face party session, pizzas were served.