To achieve immortality, I cultivate using Qi Luck - Chapter 15 - : Chapter 15: Grandpa Won’t Stay

Because of his master’s wine, he had somehow become the husband of a cold CEO — I’m still a virgin, please be gentle. He was from an ancient sect and had both Buddhism and Dao cultivation methods. The youth Qin Wu stepped out of the great mountain once again, stirring up the winds and clouds in the city.

- Description from Novelupdates

On their first encounter, the 5-year-old Tang Junhe regarded the 6-year-old Yang Xuan as a hero and willingly followed his example.

Yang Xuan: “There are 12 ways to fold a paper airplane, don’t you know? I’ll teach you.”

Ten years later, the 17-year-old Tang Junhe is living in Yang Xuan’s home as his younger brother and the feud between the older generations has yet to subside, as the two teenagers engage in a skirmish.

“The one who falls first would always lose. I knew it but I was happy.”

After ten years, the 28-year-old Tang Junhe and 29-year-old Yang Xuan are unexpectedly reunited. Is it a matter of whether things are different or whether the circumstances stay the same? Two people in the same darkness, neither one can be the light of the other.

Then let’s go together and find light together.

“The prince rides a white horse
The moon is gone
And how silly cats were, always chasing after their tails
The childhood memories are priceless.”

- Description from Novelupdates

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.

Meet Gu Yu—a college dropout and a talented incense maker, and at the same time, the rather stoic protagonist of this story. Despite his somewhat introverted manner, he has a tendency to make sarcastic remarks in his thoughts. One day, after saving a squirrel, a windfall (metaphorically and literally) dropped into his lap. Stumbling into the cultivation world with little help, he was not turned into Superman overnight (as he would like). Apparently, becoming a cultivator would not make your life easier, at least in the beginning.