Do Your Own Revolution - Chapter 177

When I died I meet with this being who offered me a new chance at life, to actually become someone important and I agreed and was reborn as none other as the First Man.But to think that everything that I ever knew was nothing more than a lie, what am I going to do to survive in such a world?

When she woke up, Lake returned to the classroom of the third year. The classmates were in class with swords and sticks, and the teacher became a female Taoist.
The little fat man in the back seat, how to put two big hammers under his chair.
Rick found this to be a global era!

- Description from Uukanshu (translated)

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.

[When you cast a spell 1000 times, the damage of all skills will be permanently increased by +10000. At this time, your fireball spell is equivalent to TNT. 】

[You cast spells 300,000 times, permanently increasing the skill damage to +3 million. At this time, your fireball technique is equivalent to an atomic bomb explosion. 】

[You cast spells 80 million times, permanently increasing your skill damage by +800 million. At this time, your fireball technique is equivalent to a supernova explosion! 】

A global catastrophe is coming,

Lu Cheng returned from the apocalypse and returned to the first day of the disaster to unlock super god-level talents!

Endless Drain: Each time you cast a spell, the damage of all skills will be permanently increased by 10 points!

So, Lu Cheng silently stacked the layers and became invincible before he knew it.

The national war has begun and is besieged by the enemy’s coalition forces? It doesn’t exist. Do you understand the fireball deterrent?

A world-class BOSS with hundreds of millions of health points? I was hit by a fireball, what can I do?

God-level civilization invades and easily blows up the sun? My fireball technique is like the sun!

Until the gods joined forces to blockade and trapped Lu Cheng in the Forbidden Fire God Realm.

Lu Chengcai showed off the other 100 skills: “Who told you that I only know the fireball technique?”

- Description from novelbuddy