You opened the doors of the gym, to see your boyfriend, Kageyama in a bad mood, well maybe he wasn't in a bad mood, he was just upset... With Hinata... Since Kageyama was glaring at him

Daichi noticed you at the gates of the gym and quickly yelled at Kageyama, causing him to snap out of his trance and stop seeing Hinata.

Daichi: "Kageyama! Your girlfriend is at the gates of the gym, behave!"

Kageyama turned to look at you and when he saw you he started walking towards you, when he was close to you he spoke to you Kageyama: "What do you need?"