Hmmm...?

I think they are

I already know since the beginning. ٩(๑❛ᴗ❛๑)۶

I didn't realise until you've said it. Omg hahahaha (ノ≧∇≦)ノ

Hahahaha.... Hmmm, will he be part of the harem?
I hope he would. I already like him the moment I saw his character

I think so. I mean, The first few chapters cover have him, Right?

I'm also pretty sure he's the 'Yin'(?). On the cover too, little white'e eyes are red

Ohhh so, it as "Yin" not "Jin"... Sorry

Hmm he might be like her watch dog, have some cute interactions but not actually join the harem.