TheDragonSlayer

“Ah... foolish hero, come to slay me... Heed my command and kneel!”

The Demon Queen offered Ryuji half the world—however, he desired everything.  
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Ryuji Vincenzo, a misunderstood son of a female gangster, beats his teacher upon seeing him commit a crime against his friend’s girlfriend. Yet because of his looks, the school forces him to change schools instead of expelling him. 

However, on his first day of changing schools, his class gets summoned to another world. 

He gains a useful class, but the calamity star chooses him. The star signals future tragedy or conflict in the new world. Despite this, the king, although asking them to fight against the demon king, doesn’t threaten them and is quite likeable.

Thankfully, the students are all given the power to fight, and this new life looks up for Ryuji, who desires to make friends and find himself a girlfriend.

Ryuji himself is quite a handsome man because of his father, but his mother's strict rules make him a strange person who wants to connect with people. 

This leads him to help those who cannot fight who would die otherwise. He wields a massive axe and uses his talents to support the weak members of his class. 
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BATTLE JUNKIE PROTAGONIST
LEVEL SYSTEM
WEAK -> STRONG
HAREM
BEAST GIRLS
DEMI GIRLS
MONSTER GIRLS
MOB GIRLS
NO YURI 
NO NTR
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This novel is a repost, as I became ill when writing the previous version and fell behind too much.

Extra Harem: S-Rank Berserker in Another World

With a rumbling crack, the doors slammed shut, vibrating with glowing glyphs before a reverberating bang occurred; the exit and route of escape vanished.

Ryuji's black eyes darted across the battlefield before snapping back to the turtle. His body became a blur, and he stopped right in front of the creature.

An explosion of smoke engulfed the room as a cut appeared on the turtle's shell. Before it could turn its head towards Ryuji, who rolled under its head, his axe clipping its shell with a brutal blow, the damage causing it to stumble slightly.

Ryuji's body ducked under its snapping jaws once more. He twisted the axe and chopped the scaly feet, leaving a large gaping wound with thick blood oozing from the grey flesh, leading to the turtle's loud cry.

With a rapid movement, its head slammed the chin of Ryuji, sending him airborne, the fluttering of his limbs blocking his chest with his garnet-bladed axe.

Defeating The Turtle