Toaru Majutsu no Index: New Testament - Volume 9, Afterword

After his brother's death, Chen Xiaobei has been taking care of his sister-in-law and his brother's daughter. And by chance, he obtained a transcendental inheritance.“Xiaobei, I think something's wrong with me! My breasts are really swollen, but Xin Xin can't get any milk out. I think they're blocked, and she's not strong enough to unclog them!”“Xiaobei, I really can't take it anymore. Could you... could you help me suck it out?”

For ten years, Ryn lived in quiet exile with his wife Mira, far from a world overrun by supervillains. But when the flames of chaos reignite, he’s forced to return to the battlefield, stronger and deadlier than ever.By his side is Mira, his unwavering partner—devoted, ruthless, and hiding a darkness Ryn can't see.Enemies rise, old ghosts return, and war looms on the horizon. Ryn seeks justice, while Mira seeks to protect him... even if it means drowning the world in blood.Let them come.

I Became Hades, the God of the Underworld from Greek and Roman Mythology

She fought in the Battle of Changping and witnessed the killing of hundreds of thousands. She once led the Qin Iron Calvary and battled against the Six Kingdoms. She has seen a third of the land and witnessed the breaking of mountains and rivers. The sound of a grand zither and the light of a great female emperor. A prosperous world that was forged on the battlefield. Yet, these two thousand years are forgotten from history.

- Description from Novelupdates