I'm still disappointed enough by the end of Lily Love that I don't know if I care to even start the sequel. Rereading it, her sudden trip abroad didn't quite come out of nowhere, but it was an incredibly cliched and unsatisfying way to end the story. Might as well have just printed a page saying "Oh, we ran out of chapters for this. She goes away for a year then comes back and then they live happily ever after".
I didn’t see much real point in that one either, but compared to the other Lezhin “main character leaves for little or no discernible reason” yuri finales like WDTFS, Pulse, Serenade, and Third Party, it was at least adequately motivated and integrated into the plot.
Seriously, although my only evidence is this otherwise inexplicable pattern, I’ve come to believe that noble idiocy > time skip > reunion is Lezhin editorial policy for yuri series rather than simply poor authorial choice. It’s not uncommon for a serial narrative to botch its ending (kdramas do it just like this all the time), but when yuri plots from one particular publisher falter in exactly the way over and over it starts to look like more than coincidence.