The Saint's Magic Power is Omnipotent 01

After a long day at work, twenty-something Sei Takanashi is enveloped by a bright light in her hallway and suddenly finds herself in a parallel world. The cause of her involuntary journey is the ritual to summon the Holy Maid at the local royal court. This Maid is said to possess the power to eliminate the monsters invading this world. Alongside Sei, another woman named Aira Misono appears, who is promptly chosen by Crown Prince Kyle as the selected one. Cast aside and unable to return to Japan, Sei begins a new life in Slantania. As a researcher at the Institute for Healing Plants, she ultimately discovers a new calling. Because her magical potions are unusually potent, there is speculation that she might actually be the Holy Maid. The manga based on the anime of the same name - with a magical ShoCo card in the first edition!

The manga based on the anime of the same name - with a magical ShoCo card and cover enhancement in the first edition!.