LINE is a messaging app by Line Corporation that is hugely popular in Japan and other Asian countries. The service is known for its distinct stickers which can be sent with messages. Nintendo has used this service by creating multiple different series of stickers based on the Mario franchise, as well as an official automated account known as Kinopio-kun. Line Corporation co-developed Dr. Mario World with Nintendo and NHN Entertainment for smart devices, which was released on June 9, 2019.
Nintendo has released multiple official sets of stickers for use with the app. Each set costs $1.99 on the app's store page. All of the stickers in each set are animated, and feature voice clips or soundbytes of the sticker's subject, which play automatically.
This was the fifth set released. This set contains 24 stickers based on the Yoshi Theater shorts in Poochy & Yoshi's Woolly World, and was released on both LINE and the App Store for iMessage[1] on March 28, 2019.
Kinopio-kun is a Toad with a green-colored mushroom cap and a green vest. He is the mascot of Nintendo's LINE account. The account is an automated bot that will interact with messengers, depending on what they say to it.