DelzGB

Stricken with a dull, boring life, Gael has already discarded his ambitions as a high school dropout. However, a chance encounter with death leaves him a choice: 
[“Meet your end accomplishing nothing, or continue on in an unforgiving world and learn what it is to live.”] 
Wishing not to die, he accepts the offer, being granted a new life in a fantastical, mysterious world of Gaia. In this new world, he is not granted an easy life, instead hunted as those like him, transported from Earth–”Outlanders”--are deemed to be executed on sight. 
He is not helpless, though, granted a unique gift upon being reborn in this world–
[Integrating system into body.] 
[...10%...]
[....45%...]
[....87%...]
[Integration complete.] 
[Gacha System initiated.] [Level: 1]

Gacha System: Reborn In The Hardest World

A sigh escaped his lips as he readied himself, placing confidence in his leveled up body before–

As he looked up, a punch was already thrown his way, witnessing those oversized, callused knuckles soaring right for his nose:

The fist failed to reach him, finding it stopped completely by the hand of the man in glasses. Despite the complete disparity in physiques, Matteo didn't seem to struggle at all as he held the massive brawler's hand in place, "Now, now, there's no need for that. We were just passing through."

"You?!--How…?!" Moro struggled, oozing sweat from his pores as his complexion was now as red as a beat.

As the burly man withdrew his fist, stumbling back, the anger he exuded was palpable as his muscles seemed to somehow swell further.

"Big mistake! I'm going to grind your bones to dust now–this is a duel!" Moro shouted, slapping his own chest as his physique was amplified.

Reunion