I am, Flame-Chaser of Previous Era - Chapter 39: Tool

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

In her past life, she had no one to rely on and died alone in jail.

But now, she has been reborn, given a second chance.

Got an heirloom.
Activated a mystical Space Dimension.
Studied medicine and became a genius doctor.
Opened a clinic.
Founded a company.
Bought a house and land.
Found her blood relatives.
Her worth became higher and higher.
Her fan club became bigger and bigger.

“Young master, the Zhao family’s young master faked an illness and went to future young miss’s place for treatment. . .” said a servant.

“Break his legs! Fail his organs! A fake illness? I’ll make him sick completely!” A man said.

“Yes! But young master. . . what are you doing?” The servant said, confused.

The man finished swallowing a bunch of expired pills and said, “I’m sick, gotta go find my wife for some treatment!”

After years of longing, Mu Chenyan was finally going to marry the man of her dreams — Yuan Xuan. However, on her wedding day, the tragic death of Shu Qinger, her well-known romantic competitor led to Mu Chenyan’s prison sentence.

Due to being reincarnated into a financially struggling noble family, I had to find a way to make money.“Just wait one more day, and the next volume will be out!”“Next week is a hiatus? Are you out of your mind?”“Hurry up and give me the next volume!”“Quickly!”Before I knew it, I was overwhelmed with deadlines instead of romance.