Why was this looking like copying Caste Heaven?

I thought too that it was ogawa chise with another pen name

I remembered I've read about this somewhere.. I think I read it on Tumblr? Anyways, Ogawa Chise has a twin sister named Morie Satoshi who mostly does Shoujo works. And her art style is also really similar to Ogawa Chise. I think Okuda Waku and Morie Satoshi are the same person, she's just using different pen names for yaoi and shoujo manga ヾ(❀╹◡╹)ﾉ~

It looks too similar though. I mean them on the sofa and stuff they're doing. It's okay if the story are different and if the author changed style later on though but it's too similar for me to enjoy it.

Thank you for that information, i did learn something new

Yes , morie satoshi and okuda waku are the same person. Ogawa also has another name she uses for her non yaoi manga. They both learned from the same teacher and drew together when they were kids.