
Suggest me some straight, loyal, and not weird manhwa or smtg

Damn, that depends on what you mean by weird. Like no incest or pseudo incest?
It was Just a Contractual Marriage?
It's straight, has loyalty, and the main characters are not related in any way.
I don't know if it's here but it's on Manta.
For non messed up stories, it's best to look outside mangago. The most messed up tends to trend here ( ̄∇ ̄")

Who are the parents of cayril??? someone explain

Cayril is the son of Prince Albert(Audrey's nephew that we saw giving her the flower crown in the original work) and Princess Navare of Castilla. Despite Cayril looking a lot like he's Audrey's and Hector, we need to remember that a condition for her to inherit the title was to not get married nor to have children. It's also showed a flashback of Cayril saying goodbye to Princess Navare(his mother) because she had to go back to Castilla and get remarried most likely due to political reasons.
PS:I went and read the original again just to look for Hector's name since I couldn't find it anywhere.(╯°Д °)╯╧╧
*screaming in the corner*