I'm 90 years old and the system tells me it's time to create harem - Chapter 16: Alternate Dimension

On the first day Yuna became a class teacher, she became well-known in school because of her looks. On the second day of becoming a class teacher, a student secretly took photos of her with his phone and was called to the principal’s office with his Guardian. The person who showed up turned out to be Yuna’s university crush, Xiao Chen.

To Yuna’s surprise, Xiao Chen was the elder brother of the very student whose class she manages. She also realized that this rebellious student causes trouble two or three days out of every week, indirectly giving them many chances to meet.

…

When they reunite again, Yuna is puzzled. Wasn’t Xiao Chen a poor young master in the past? How come he’s now driving luxury cars and living in mansions?

Xiao Chen is also puzzled. Wasn’t Yuna a rich daddy’s girl in the past? How come she’s now dressing plainly and squeezing onto public transport??

…

In the eyes of her students, Yuna is very beautiful but has always been diligent and thrifty, with little interest in money.

However, one day a Rolls Royce showed up outside school, waiting. Upon seeing Yuna, the chauffeur respectfully opened the door for her, “Miss Yuna, please get in.”

From that day forth, her true identity set off huge discussions in school.

Everything in the world can be repaired!

- Description from novelbuddy

On Terra, everyone has a 58% chance to “Awaken” as a Traveler—a chosen few who can access mystical portals called Flumes, allowing them to travel to Genovia, a world filled with unimaginable power, chaos, and danger. But not everyone gets to be a hero.Born into a struggling family with nothing but ragged clothes and a bleak future, Aoni Thurston, a total nobody with a humiliating One-Star Potential and G- stats across the board, knows his only chance at survival hinges on unlocking his hidden ability, something which all Traveler’s are gifted “Attributes.”But Aoni’s Attribute, “Progression,” holds a secret—a power to bend the rules of his ruthless reality. Each small victory, every step forward, earns him mysterious Progress Points, enabling him to transform his weaknesses into strength. Surviving the unforgiving snows of his desolate Territory, he faces isolation, despair, and near-death, all while unraveling the potential of his Attribute.In a world where power is everything, can Aoni claw his way from obscurity to greatness, or will the system grind him into dust? His future is uncertain, but one thing is clear—everything in his world can change through his Attribute: Progression.

An ordinary man, Ye Chen traveled to the cultivation world by accident and became a phenomenal immortal of that era. After 3,000 years in the cultivation world, he was betrayed and traveled back to earth through a spatial tear.Five years had passed in the mortal world, but when he came back with his abilities, he found out he now has a daughter!