Reborn as D-Rank TRASH, He Gains +1 POWER With EVERY HIT

What the story is about

After being murdered by his half-brother and girlfriend, D-rank student Chin Foam regresses to awakening day and discovers a hidden talent that permanently increases his blood chi with every attack. He turns the ability into an absurdly fast power-leveling method, using guns and relentless monster hunting as he seeks revenge and grows strong enough to challenge the people who once controlled his life.