Makes it possible to share real-time moments in video
TOKYO – May 17, 2018 – LINE Corporation (“LINE”) releases Stories, a new feature for the Timeline tab on its messaging app.
*1 Available on LINE app version 9.7.0 (iOS) or 9.7.5 (Android) and later.
LINE introduces a new way to share information on Timeline and Profile— its new feature, Stories, allows users to share moments, moods, and statuses in the form of video, photo, or text. As posts vanish after 24 hours, there is no need to worry about overposting or having posts remain in the feed.Aside from user-posted Stories, updates on profile information,* which was previously available only in the Friend's list, can also be displayed in Stories.
Stories allows friends to discover real-time information on Timeline that is available only for that moment.
*When a user modifies their profile picture or background.
More details: Official LINE Blog 
Introducing Stories to share all your moments
http://official-blog.line.me/en/archives/1074764740.html
Additional features, such as using LINE stickers in Stories, are coming.
LINE values user feedback as it continues to update its services to provide the most convenient and secure service possible.