Arctic

As far as the manhwa revealed emperhoe only had 2 (and i think its only 2 too). The empress (grey haired one) and sid mother aka the imperial consort (blondie) (⌒▽⌒)

No. His mother was the emperor's lover, but the emperor chose power over love. She lived a miserable life, either due to depression or threats from the empress. She gave birth to Sid and gave him to the royal family in exchange for letting her live in peace. Unfortunately, the empress continued to hunt her down until she was finally killed and her head was "gifted" to Sid.

From the spoiler i read on NU forum, empress the one who swapped sid baby (￣∇￣"). Last ch its shown Imperial consort lost her baby "girl" but its actually sid and how the imperial consort told emperor she did not expect anything anymore and emperor said he choose power over love, the head the empress gave to sid is the so called "mother". I double check to spoiler NU forum, scared i might actually halucinate abt the plot lmfao (￣ε(#￣)Σ

In the novel the ending gives all of them an ending with ShuShu! I’m not sure if the Manwha will do that too but I hope so ╮(￣▽￣)╭

There's no single male lead cause they're all Male leads.