AKMU Suhyun and Chanhyuk showed the real definition of siblings' banter after the male singer teased his younger sister once again by mentioning the pig ban in Korea.

Read more for their hilarious conversation.

On October 20, Suhyun left a message on her Instagram story, saying, "My older brother who only thinks of his younger sister."

The "Nakka" singer then posted a photo that contained a capture of a messenger conversation.

The photo immediately attracted attention from K-pop fans, due to the adorable bickering moment of the duo on the internet again.

Siblings and Duo AKMU Suhyun and Chanhyuk Had a 'Bickering' War of Nerves in Line With Korea's Pig Ban

On Instagram, Suhyun revealed that she was the one who tagged Chanhyuk's SNS account and had a conversation.

Chanhyuk then sent an article to his sister, titled, "[Breaking News] A 48-hour National Pig Stop Order from noon today."

In the article, it seemed to be about a pig ban for a short period as a precautionary measure following African swine fever. Along with the screenshot of the article, Chanhyuk said, "Lee Su (Hyun), you don't have any schedule, do you?"

Suhyun, who is used to being teased by her brother, responded, "Ah, yes, yes," adding, "Thank you," using cute phrases as if trying to irritate her brother with her "aegyo."

Chanhyuk teased Suhyun more by answering, "*sigh* oh well," adding, "Fighting!"

Fans who saw the Instagram Story immediately expressed a heated response to the pleasant Chanhyuk teasing his younger sister by comparing her to a pig, flaunting a real-life sibling chemistry passed over insignificantly.

ALSO READ: AKMU Suhyun Reacts After Some ARMYs Mentioned BTS Jimin in Her Live Broadcast — Here's What She Said

AKMU Chanhyuk, The Only Person Who Have the Right to 'Diss' Suhyun

Numerous internet users commented how Chanhyuk, her biological brother, is the only person who has the right to comment or make fun of Suhyun's appearance.

In the past, Suhyun became the center of mockery due to her appearance and body proportion.

Nevertheless, in 2018, Suhyun gained praise for dealing with malicious comments related to her appearance maturely and positively.

Suhyun said, "If I'm pretty no matter what anyone says, I'm satisfied, and I'm pretty according to my standards, I'm pretty no matter what anyone says," adding, "I am a person who is attractive and pretty enough in itself."

AKMU released its collaboration album "NEXT EPISODE" on July 26. The title song "With IU" continues to be popular for a long time, being nominated for the top spot on SBS's "Inkigayo" on Oct. 17th.

IN CASE YOU MISSED IT: AKMU Lee Suhyun Responds to Hate Comment Concerning Her Visuals on Instagram Story

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Written by Eunice Dawson