Place it at the end of a friendship scene, just after the awkward moment, then follow it with a light laugh or a cheerful anime catchphrase to close the scene. For a longer edit, put Nico Nico Nii after it to move on to the next scene.
About this sound
Tadashi Yamaguchi says gomen Tsukki in this clip, a brief Japanese apology to his friend Kei Tsukishima that lasts just over a second and a half in a soft, earnest voice. It feels sweet and a little awkward, like a shy sorry between close friends. The line comes from Haikyuu, where Yamaguchi is a pinch server for Karasuno High and Tsukishima is his teammate.