To those who don't like the romance hinted dynamics..

what's the story?

Which one, the main one or this one?

yes pls

You just said yes please and didn't answer which story ¯_(ツ)_/¯
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Greatest saint of all time (red haired princess) fight the demon lord with siblings, after killing the demon lord, she was framed and left as disposable pawn to escape due to the hatred of her sibling's party towards her, the right hand of demon lord thought the saintess killed the demon lord so they curse her to be hunted and kill her on the spot if she ever reincarnates. She was alone, without her knights (white & blue), so she was tortured after cursing her and died.

The royalty that was left (her siblings) changes the story narrative of her, the greatest saint became somewhat hero and she even have a huge portrait on castle, but she didn't get to be acknowledged as part of royalty anymore. The function of saintess who fights in the frontlines just like her are nowhere to be found since the succeeding saintess were made to be weak and protected just to heal with so little power. The national flag changes, it became red to 'honor' her, there are no blue and white knights anymore.

300 hundred years have passed since and she reincarnates once again. he was born into a knight family, her brothers were cold and bullies her due to being weak as a knight, only her sister adores her, her father was somewhat neutral. Her dream was to be a knight despite of having other choices, her sister even discourages her since the whole family are knights already. She insists and plans to bring proof of monster being defeated before going to capital for coming of age ceremony a.k.a. knights exam.

She went to forest to get magic stones as proof of strength (part of test) and eventually encounters a dying baby black dragon which somehow transforms back to regular size after drinking healing potion and attacks her. She somehow regains her memories of being great saint while fainting.

The black dragon forms a contract after being healed, protects her while killing monsters that get attracted to her powers. Upon waking, he told her she's a saintess who healed him but her memories were still fuzzy. When she regains it slowly, she remember the curse of demon lord's right hand and became very afraid to expose her identity, so she told dragon to keep her being a saintess a secret and went back home with the magic stone of monsters the dragon defeated.

After going back home with the dragon, they were surprised, but the dragon immediately left after telling her he can be summoned anytime. She somehow managed to take the knights exam, show her knight skills (with cheat from her saintess powers) even defeats her brothers as examiners which infuriates them more.

She passed the test with flying colors, assiged to the 1st knight order and was about to have speech during the knights joining ceremony but she was asked by supreme commander for a mock battle instead (supreme commander of 20 knight order, the next ruler, majesty's younger brother, maybe her brother's descendant). The commander gave her a handicap, she lost but the commander notices her sword are enhanced (became level of national treasure) which made him lose technically since he was supposed not to attack and remains steady.

Now that she stands out in a bad way, she attracts more eyes contrary to her plan of having a low profile life as a knight, to hide her reincarnated self as the great saintess. She'll be assigned to different tasks as a knight, face challenges and eventually visits a place in which her past self was strongly worshipped, meet her former blue knight (reincarnated but memories slowly resurfaced). There are many more on what happened (I also saw the raws ahead) but it will spoil the fun so go ahead to read the story yourself.

{There is no hint romance so far in the main story as of the latest manga raw chapters.}