An ex-Soldier and three kids

Lyra was a seasoned soldier, her A-level mental prowess and formidable B-level physical strength made her virtually unstoppable, even within military circles. However, she made a pivotal decision to depart from the First Army and transition into academia. 

Renowned for her unwavering commitment to justice and her genuine affection for the younger generation, Lyra was highly regarded by her peers and students alike. Little did they know, behind her facade of a peaceful life, she was hiding her sinister intentions. 

Only she knew that after doing the experiments on her body to evolve her levels, she damaged her organs. Under the pretense of 'wanting to live a peaceful life,' Lyra left the army to treat her body and bring it to its maximum potential.