17 February

• Yuehua officially announces new girl group 'Everglow' and opens official accounts (x)

18 February

• Yuehua confirms Produce 48's Kim Sihyeon and Wang Yireon are set to debut in Everglow (x)
• Kim Sihyeon's Crank-in-Film is released (x)
• Sihyeon's selcas and first posts on twitter (x) (x) (x) (x)

19 February

• Mia's Crank-in-Film is released (x)
• Mia's selcas and first posts on twiter (x) (x)
• AKB48's Takahashi Juri congratulates Sihyeon (x)
• AKB48's Asai Nanami congratulates Sihyeon (x) (x)

20 February

• Mia posts on twitter (x) (x)
• Onda's Crank-in-Film is released (x)
• Onda selcas and first posts on twitter (x) (x)

21 February

• Onda posts on twitter (x) (x)
• Yiren's Crank-in-Film is released (x)
• Yiren selcas and first posts on twitter (x) & accidentally (?) deleted tweet: (x)

22 February

• Yiren selcas and posts on twitter (x) (x) (x)

23 February

• Yiren, Mia, Onda & Sihyeon post selfies together on twitter (x) (x)

24 February

• Mia selfies (x)
• Yiren selfies (x)
• Sihyeon selfies (x)
• Onda selfies (x)
• E:U's Crank-in-Film is released (x)
• E:U's selcas (x)

25 February

• Another E:U selca (x)
• Aisha's Crank-in-Film is released (x)

26 February

• Aisha's selca and first post on twitter (x)

27 February

• Sihyeon posts a selca (x)
• Everglow - Rumor dance cover (x)

28 February

• Yuehua reveals the subway ad they put up to thank fans for waiting for Yiren & Sihyeon (x)

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• AKB48's Asai Nanami shares a behind-the-scenes story of Sihyeon during PD48 days (x)
• AKB48's Kojima Mako congratulates Sihyeon (x)