Fukushuu Hime Lola - Onee-sama wo Ikenie ni Shita Kono Kuni wa Mou Iranai

Layla and Laura were a close pair of sisters born to a noble family. But their daily lives suddenly changed after Layla became the “Saintess,” an important asset to the country… And thus due to an evil nobleman’s scheme, their love is being torn apart…
https://www.cmoa.jp/title/290938/