Toaru Kagaku no Railgun SS - Volume 1, Chapter 5

Akira Kitagawa, a quiet and unremarkable second-year high school student, has come to accept his lonely, mundane life after losing his parents in a tragic accident. No friends, no excitement—just peaceful monotony.Until one day… a girl literally falls from the sky.Sera Rymer, a fiery and seductive mage from a world of magic, crashes into his life—naked, powerful, and completely confused. Bound by an ancient pact of Master and Slave, she must now live under Akira's roof, turning his boring world into a whirlwind of magical chaos, awkward steam-filled encounters, and otherworldly drama.From laundry mishaps involving spells to battling demonic pursuers from Sera's realm, Akira's once dull life is now anything but ordinary. But as their bond deepens, secrets unravel—and the “God” behind it all might have very different plans.Can a lonely boy and a wild mage girl find meaning—and maybe even love—in the absurdity of it all?Tagline:When magic crashes into your mundane life, expect steam, spells, and soul-binding surprises.Tags:Romantic Comedy, Fantasy, High School, Ecchi, Magic, Isekai Girl, Master-Servant Pact, Slice of Chaos, Slow Burn Romance, Fanservice, Opposites Attract, Everyday Magic, Harem (Optional), Steamy Situations, Lighthearted Drama, Tsundere Heroine

[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

She is an international ace agent,An amazing doctor, God of Assassination, However due to a box she accidentally rebirthed and became an ordinary junior high school student. Weak and incompetent, That scum woman wants to put her head into the toilet. The gambling father, borrowed a lot of money and now they are being chased by loan sharks for debt? There is also a group annoying people in her life. The reborned Yunxiao sneers: I want to know how to write the dead words! She returned from the wind, high-profile attack, if people dared to bully me, they are courting death!

[This is your typical story where there is a System of unknown origin given to mankind, and the existence of Towers, Dungeons, and Constellations, the known or unknown ‘Gods and Demons’ of humanity’s collection of myths.]

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— Ding!

[Astronomical Event!]

An event called 'Emergence of Races' struck the human world where the planet Earth was stretched out like dough causing it to become seven times its original diameter.

Various Towers and Dungeons sprouted out of nowhere that caused an earthquake that broke the seismic scale.

Billions of humans died in the process that crumbled human society in an instant.

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And just like that, Russell Moon reincarnated in the world of his-considered-failure unpublished novel [The Forgotten Swordsman of Ruined Star], sixteen (16) years before the beginning of the ‘Main Story’ which was set forty (40) years after the Emergence of Races.

And due to that very reason, the existence of 'Untouched and Unknown elements' came back to bite him!

'Why did I write that way?'

Russell Moon lamented.