Basic Brainwork

"More importantly, it looks like we don't have that much time.", Elihim became serious, "Trouble is pretty near than I thought."

"Trouble.", Rin was already relief that somebody had already taken care of his mother but there were already bigger problems?

"You need to improve your strength as much as possible since we have limited time."

"What? Why?", Rin asked again.

"We need to find a way…", Elihim seemed to be thinking hard. It is hard to tell if its really serious or not since Elihim looked really casual and not worried about it at all.

"What? Tell me, I'm now itching to know what's going on.", Rin pleaded.

"What? You really want to tell you in the middle of these crowds?", Elihim raised an eyebrow.

"Huh? Is that bad?", Rin looked around.

"Hahah, just joking, just joking.", Elihim smirked.

"Haah? Is there something really serious or not?!", Rin was about to get confused as Elihim started to walked.

"Let's go, its pretty weird to talk in the middle of a path."

"It is?", Rin followed as he scratch his head. He didn't know if there is actually trouble or not.

Before saying anything, Elihim heaved a bothered sigh, "There is actually two news that I need to tell you."

Rin nodded but inside, he's really getting curious and a bit worried.

"One is a good news and the other a bad news. The good news is, your pretty lucky and the bad news is you're pretty unlucky.", Elihim looked at Rin, hoping that his disciple get it.

"No, I don't get it.", Rin doesn't know what's going on anymore, "Master, why so vague about things you say to me?"

"Hmm, think but don't overthink. Remember that I told you long before. You're not dumb or stupid, you just overthink too much because you're afraid to do anything wrong but since you got past that, I want you to think more efficiently now.", Elihim tapped his temple.

"Huh?", Rin pondered, 'Yeah, I kind of get that. Maybe I really am insecure back then that I think too much. Can't believe that master fixed that part of me….. even though in a very harsh way and some mind twisting words.', although, he thought of that, he felt grateful and admiration at the same time to his master.

"Now think about what I said before.", Elihim said in content when he saw Rin, focusing.

'What he said earlier, the good news is that I'm pretty lucky and the bad news is that I'm unlucky…', Rin's head hurt a little and looked at Elihim, "Master, I think it's very broad to get a single clue."

"Hahah, yeah, you're right.", Elihim lightly laughed, "I said too little. Here, everything has an opposite side in the coin."

"Ah! That's a pretty hard puzzle!", nonetheless, Rin still gave it a try, "You mean, when I got lucky, there comes the opposite of it which is the unlucky…"

Elihim nodded, "Last one thing, this is pretty relevant. The good news is that after you became immortal, Nathan a.k.a the God of the Underworld, is dead."

"Dead…", Rin pondered again but it suddenly hit him, "Dead?!", he yelled.

Other passerby looked at him but they have their own lives and continued their own businesses.

"Hahah, keep it down, will you? Why are even surprised? You're the one responsible for his death.", Elihim said it as if it was not something serious.

"Wait, why me?", Rin started sweating, 'A God died? Gods are a big deal, right? And I'm responsible for it?'

"You don't remember? You're immortality came from him. No, that's wrong, it's actually the other way around. His death came from you and then you became immortal.", Elihim smiled.

"Y-you mean when I signed the contract I gave him what I treasured the most which is death and that killed him?!", Rin couldn't believe his own words that he stuttered which he had not done in a long time. He didn't bother keeping it low and letting others hear it.

"Yeah and the bad news for you is that the Underworld is in grievance and swore to take revenge. I don't understand them at all, they prioritized revenge before reviving their God.", Elihim shook his head in disappointment.

"The Underworld? Revenge?", Rin panicked.

"What? Are you scared?", Elihim glanced at Rin.

When Rin heard that, he remembered something, [He already experienced the most painful thing he could imagined and gone through the greatest shame. What is there to fear?] Rin took a deep breath and calmed down, "No, I'm not."

Elihim looked at Rin in content, "Well, you should be. As it is now, even if you faced the weakest of the beings of the Underworld, you will wish you can just die.", but he ruined it.

"But…", before Rin could continue anything, Elihim said, "It is not bad to be courageous but you still need fear and have the knowledge whether to back off and give up. Although in your state where you couldn't die, fear is no longer an instinct to live but a natural instinct to win, get it?"

"…", Rin didn't answer for a while and nodded in agreement, he understood that he still needed fear, "So that's what the bad news is? How strong are they? When will they show up? Also, you mentioned reviving their God, what was that? And why didn't you tell me first of that before giving me puzzles and headaches?!", Rin all said that in one breath.

"Easy now, I just thought that this is the perfect time to teach you something. You need to learn the basics first before I teach you that required a lot of brainwork and the basic of all the basic is to first learn how to think properly."

Rin didn't know but he was a bit amazed on how his Master do his thing.