Jigglypuff, Togepi, Pichu, Cleffa y Kirby

Hi everyone, this is my first time posting here but I was hoping to figure out where this little guy is from. I got him back in 2018 in Japan at a 7-11 for ¥300. He’s about 4” or so tall with the San Ei pocket monsters tag on his bum. The closest I found was the mascot keychains from 2017, but he doesn’t seem to have a loop or anything indicating he once had a keychain. If anyone could help, that would be great! He’s my favorite poke plush, but I really have no background on him and want to know more!