awoken after darkness

Heiwana opened his eyes to a unfamiliar face staring at him DOCTER! hes awake! suddenly another new face entered the room, hello Heiwama can you hear me? it was then made clear to Heiwama that he had managed to defeat the Shadow and he had actually unlocked 2 never seen before skills from his isekai unbeknown to these people 1 of them would allow Heiwama to copy abilities from defeaten foes and the other only working in desperate situations would triple all his stats and allow him to use 1 ultimate magic spells on a higher level then Heiwama's actually level that was also the technique that allowed him to defeat the soulshadow, after defeating him he also gained 5 levels putting him on level 12 and all his stats doubled after Heiwama got over the shock his now regenerated party members entered the room, they had both leveled up and gained a lot of skill points as well and Heiwama was glad to see that then the guildmaster himself came to visit Heiwama he told him he would need to rest for a while because of mana depletion but for the time being he awarded Heiwama with his new C rank badge that he had definitely earned after this mission, he also interviewed Heiwama on the soulshadow and asked for all the specifics. then a few days later Heiwama had fully recovered and he now wanted to try a few of the skills he had gotten from defeating the soulshadow he apperentely had the absorb skill all along which allowed him to actually get the following skills 1: shadow realm a skill that could send anyone to an unescapeble realm but it only had 3 uses skill 2: an abyss magic spell that when activated on someone would drain the life-force out of them and transfer it to the caster so he decided to test it out on a bird around 50 ft away the spell range was apperentlly 60 ft so it should work, after casting it the bird immidately fell down and Heiwama felt a slight bit of power entering his body, he knew this was a strong spell and dangerous at that so he decided only to use it on monsters, then finally the third and last skill: magic resistance then he felt handcuffs being put around his arms and he only heard this: Heiwama you're under arrest for the use of dark magic.