無自覚聖女は今日も無意識に力を垂れ流す
The Oblivious Saint Can't Contain Her Power
Mujikaku Seijo wa Kyou mo Muishiki ni Chikara wo Tare Nagasu
Drama · Fantasy · Romance
Lady Carolina, the overlooked daughter of a powerful duke, has always believed herself to be the black sheep amid her illustrious kin. Her father is the distinguished prime minister; her elder sister, a prodigious mage destined to become their nation’s next Saint. In comparison, Carolina resigns...
Synopsis excerpt via AniList, originally from J-Novel Club.