Long Live The Emperor! - Chapter 363 - :220. I’ll Open a New World for You

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.

She shouldn’t have got drunk, so she wouldn’t have court the troubles.
She slept with a handsome man and would be sent to the police?
Oh, my sweet Jesus…
“So you just ran away like nothing happened after you slept with me?”
“Old jerk! Even if I had the initiative, it was you who took advantage of me!”
As a saying goes, the more spoiled a president gets, the more likely he becomes a scumbag.
An adorable ‘wildcat’ vs. a scheming frenemy.
This was a love rivalry between a modern Cinderella and a Big Boss.
As time flew, the world was like a fleeting show.
When they met again after several years of separation, he held her hand tightly and swore that he would never give her any chance to leave him again!
Finally, he asked her to marry him and pampered his cute wifey with his endless love.

- Description from Novelupdates

[ Caution: High Heat Advisory ]“Harper, stop undressing me with your eyes. The plot isn’t going that way… YET.”Harper McKenzie, a newbie web novel author, has a problem — she struggles with romance scenes. As someone with almost nonexistent real-life experience in the matter, she can’t get the intimate chemistry right, and those chapters always come out dry and cringy.Fortunately for her, Harper finds a freelance editor willing to workshop her writing. But the surprise? That editor turns out to be her childhood friend and the very first crush of her life.What happens now when he offers her personal lessons on how to write the hottest romance … and love scenes?--------------Note: this is a fun, cozy, sweet story with a low-drama plot. No love triangles, no misunderstandings, no memory loss / car accidents / terminal illnesses / etc.. Mature content abounds, starting out soft but heats up quickly. You’ve been warned!--------------Sneak Peek:He slid her bra over her shoulders and, with impossibly quick and skilled work, tied the lacy garment around her wrists. “Spread your legs wider,” he ordered.Harper’s already faltering heartbeat faltered some more. The command in his tone was foreign, but it crashed over her like a heat wave, and even though she could barely begin to picture how salacious she must look, with her hands bound and thighs spread wide like an offering to be ravished, she could feel the scorching need coiling hotter and hotter in her core. Her body obeyed eagerly on its own accord, bringing herself fully open just like she was told.Eli grinned. Moving between her legs, he trailed hot kisses along her inner thigh, leaving sizzling little fires crackling in its wake. “Good girl. Now, what should your character say next?” A finger glided over her wet and wanting flesh in a slippery stroke, making her heart slam to a hard stop as a moan tore free. “Write the next line for me, what should I say before I unravel you with my tongue and make you scream my name?”