2016–present: A New Trilogy and R U READY

Lovelyz's first reality show Lovelyz in Wonderland began airing February 2 on SBS MTV.[21] Their song Ah-Choo continues to remain in digital Korean music charts long after its release, on September 14, 2015.[22]

Lovelyz released their second mini album, A New Trilogy on April 25, 2016. The album contains seven tracks with lead single titled Destiny.[23] The title track was debuting at number seven on the Gaon Digital Chart, making it their highest charting song so far.[24]

In November 2016, Lovelyz announced to be holding their first solo concert since debut titled Lovelyz in Winterland at the Blusquare Samsung Card Hall from January 13-15, 2017.[25] At the concert it was revealed that Lovelyz would make a comeback in February.

Woollim Entertainment announced that Lovelyz was set to release their second studio album "R U READY?" on February 27.[26] Woollim Entertainment announced that Yein had injured her ankle during practice for comeback and may be unable to promote.[27] On March 2, Woollim Entertainment confirmed that Yein won't be participating in this comeback due to her ankle being injured.[28]It was confirmed that Yein will join promotions on March 23 for M Countdown after recovering from injury.[29]