Fans are talking about how BTS member Jungkook's internet persona changed after his adolescence. 

On July 30th, a post showing how BTS member Jungkook's internet persona changed over time garnered attention on a popular online community. Back in 2013 when BTS debuted, Jungkook was 15 years old and was going through his adolescence. His tweets back then were rather serious and formal. 

On October 6th, 2013 he tweeted, "This is Jungkook. ARMYs are you coming to Gyeongju after seeing us at Inkigayo? I am really happy and grateful but you know your health should come first right? Wishing you safe travel when you are coming here." 

On September 4th, 2014, he tweeted, "This is Jungkook." Fans said Jungkook used to have the nickname Jeomkook('Jeom' means a period in Korean) because he did not forget punctuations whenever he wrote on the Internet. 

But in recent tweets and messages, Jungkook was seen using a lot more emojis and informal languages. 

Fans commented: "It looks like a child trying to look more mature by using formal languages lol"

"Why do I feel like I raised him? lol"

"These are two completely different souls lmao"

"It's a shame I belatedly joined the fandom. I wish I could see Jungkook's debut days in real time"

"This is so cute" 

"Jungkook's soul has changed lol"