In August 2016, Instagram showed new function called, "insta-stories". From this function, users could post their photos/videos for 24 hours. Furthermore, users could see their previous insta-stories with the new archive function in December 2017. Through this function, I shared a lot of photos and videos of my daily life often because I felt insta-stories was more casual than posting pictures and videos as feeds on my account. Insta-stories archive becomes my diary, which recording what I did in the past. Posting insta-stories become as my daily life slowly.