It's in the chapters. It's called 'Love is Love'
I tried finding it but had a hard time, since I'm so curious if it still has more chapters.
It has no more ;~;
I also want more but alas that's all there was. :(
You mean the secondary character Dowan and Chamin? If it’s them, their manhwa title is Room to Room. The author was supposed to release the manga soon but she had some problem on the publishing website and all, so she delayed it.
What's the title of the 2nd Story after Window Beyond/To Window?