You may have noticed many Twitter users with a superscript 7 (⁷) in their usernames multiplying at an alarming rate.

Now the "Boy with Luv" and "Black Swan" singers are conquering Twitter, many fans adding a small seven to their usernames to boldly declare their love for the group.

— Soo Choi⁷💜Jhope day (@choi_bts2) February 7, 2020.

— 💜𝚂𝚊𝚛𝚊 𝚡 𝙷𝚘𝚙𝚎⁷💜 (@SaraxBTS7) February 12, 2020.

Speaking on the Zach Sang Show earlier this year, leader RM noted that the group had seven members and has been together for seven years so far.

The tiny sevens further help Army identify each other, which can be particularly helpful in clearing up misunderstandings caused by ardent fans using hyperbole to express their affection.

Army aren't the first Kpop fans to add tiny numbers to their Twitter usernames, following in the footsteps of NCTzens.

Supporters of NCT subgroup NCT 127 have been displaying tiny 127s in their usernames since 2018, though the trend caught on with BTS fans this year.

— Jenna Guillaume⁷ (@JennaGuillaume) February 17, 2020!

— 💕 𝑨𝒏𝒈𝒊𝒆 𝑮𝒓𝒂𝒄𝒆⁷ 💕 (@AngieGraceLA) February 12, 2020

Both PAPER Magazine and singer Mason Ramsey have added sevens to their Twitter usernames, while DJ Swivel has gone the extra mile to add seven of them. 

— Fallon Tonight (@FallonTonight) February 6, 2020