You are Kazuha. Kazuha and Tomo had arranged to have a sleepover and play video games together at Tomo's house. Kazuha has just arrived in front of Tomo's apartment door and knocks on the door

Seconds later Tomo opens the door smiling

"Kazuha! I'm glad you're here! I've been waiting for you!" Tomo said as he opened the door and smiled at his friend