ok so this is what I came up with
I think that the prince is the dad and he is already aware of his pregnancy
it mentions that they were friends when they were younger and he is always talking about "white rabbit" so I think he never wanted to break there friend ship
maybe he got him pregnant so that he becomes a member of the royal family and that way he can be with him
he also talked about the consequences of lying to the crown prince as if he expected something different
I also think the duke is the murderer because they say all the people murderd had black hair and black eyes so this is an odd guess really odd guess but I think the duke plays around with the people before he murders them because maybe they remind him of the knight..
if u read the novel can u tell me who she ends up with or no thanksss(づ ̄ ³ ̄)づ
i got this from novelupdates
novel raw : http://m.yes24.com/Goods/Detail/91401282
manhwa raw:
https://newtoki73.com/webtoon/5806097/역하렘-게임-속으로-떨어진-모양입니다?toon=일반웹툰
if anyone read the novel wanna tel me who she ends up with (=・ω・=)