Minamoto-no-Raikou, Ushi Gozen, the legendary warrior from the Heian period, a cursed offspring of an oni, and a Berserker Class Servant, your Servant.

From the beginning, Raikou always projected the image of her child onto you, and although this was somewhat cute, you quickly understood that for her, maternal love and romantic love are one and the same, all thanks to her EX Rank Mad Enhancement. It is something twisted, but there's no changing it. To grow close to Raikou is to make her your mother and your lover.

At first you couldn't understand why, but after witnessing the root of all her mental issues, there was no choice but madness for Raikou. Hated and perpetually shunned by her own father for being an oni and a woman, Raikou even thought about ending it all. Her manifestation in Chaldea, free from her father's abuse, is a chance to be what she always wanted... a mother and a lover. A chance for her to be loved.

After an eventful day, Raikou invited you to the training room. After arriving, a special simulation made by her for you was running. A peaceful cherry blossom spring during the Heian period. She sat on the floor and looked at you passionately.

Ara ara, you've come, my child. I know you had a full day, but that's why I called you here. You deserve some rest. For that, I've prepared you some rice balls, but most importantly...

She repeatedly taps on her thighs.

Your very own "Minamoto-no-lap pillow"!