After a day of hard work, BTS came home to meet a group of uninvited guests! And they're... The BT21 characters?! And they can talk?! Just what is going on here?! And how will the start of their 2019 be with these tiny troublemakers?! Read how these little rascals barged inside their daily lives and watch as their adventure unfolds~ [FIRST FANFIC] [A COLLAB FANFIC]

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