10 nen goshi no HikiNiito o Yamete Gaishutsushitara Jitaku goto Isekai ni Ten'ishiteta - Volume 12, Chapter 7 Yuuji, finally resolving himself in his fifth year of living in another world

Venshiro, a young ronin bound to the Black Vein Blade, is hunted by clans who would kill for the curse he carries. Every time he draws the sword, it takes something from him—his memories, his soul. But the blade remembers everything.And now, it wants more.

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.

After the sudden death of her boyfriend, Leslie Song has been single-handedly raising her precious little daughter Calliope. It’s a difficult life, but it’s a happy one. A freak accident puts an end to that.As Leslie lies dying on the road, watching Calliope breathe her last, she curses her helplessness. Calliope’s crochet fox seems to hear her. It opens its mouth and asks, “Do you want to see your daughter again? If so, follow me. Her soul has already left for another world.”Leslie agrees. That’s the last thing she remembers before losing consciousness. When she opens her eyes again, she finds herself—or rather, her soul—standing beside her unconscious body on a hospital bed.“How is this supposed to help me find Calliope!” she exclaims.“This is not your body. Your body is dead. This is my original host, Charlene Li,” explains the toy fox. “You can possess her body to find Calliope, but if you do, you must finish her uncompleted mission for her.”“And what mission is that?”“To marry the second most eligible CEO in the city.”‘This,’ Leslie concludes, ‘is a scam.’ But she has no other choice.**********Meanwhile, the second most eligible bachelor in the city, Calix Xu, is patting himself on the back for thwarting his grandmother’s attempts to marry him off. After exhausting all of his tricks and excuses, he has resorted to marrying the comatose daughter of the Li family.Calix smiles, pleased with himself, “Aren't I smart? Grandmother can do nothing now.”But… why is he seeing his newly-wedded wife hovering beside her own body?Before he can react, his wife—the moving one—floats towards him.“Husband! Help me find my child!”“Your child?” Calix asks weakly before doing the only reasonable thing he can do in such a situation.He faints.

“Host, you are about to load the sci-fi adventure system, please be prepared”
“Three Body”.
“Wandering Earth”.
“Interstellar”.
“Gravity”.
“Mars Rescue”.

Uh …
As the youngest full-time professor of mathematics in the history of Jiangcheng University, Pang Xuelin was a bit stressed.
Uh …
The hardest science fiction, the best times.

- Description from Qidian