"Ha... Ha... It's finally done." Nathan panted heavily.
His body was drenched in sweat as he looked extremely tired.
Vivian stood up while saying, "Yeah. It's done. You have swallowed 26 mature class cores. This should bring your Ena to above 10,000. It's going to be hard to calculate that Ena at this point, so I have been working on a machine that can measure your Ena.
"It's going to be completed soon. At that point, we can even count Ena up to ten million Ena pretty easily.
"I have never thought you would think of a concept of measuring crystal, Nathan." Vivian smirked.
"Ahahaha." Nathan let out a hollow laugh, thinking, 'I only told you about the cultivation world's measuring crystal. How many cultivation stories do you think I have read?'
Vivian continued, "So, by merging ten Ena into one to create a slightly bigger particle with a different color, you can count it easily as ten Ena. Then, a hundred Ena, a thousand, and so on. To think you would use the concept of abacus to measure Ena. I'm impressed."
Nathan smiled wryly. He didn't use it. In fact, he was quite surprised that Vivian found Abacus to be related to this. After all, he just spewed bullshit to make her believe it.
"Anyway, get some rest. I will visit you later once I'm done with the machine. It should be completed before we go back to the academy." Vivian waved her hand and exited the room.
Nathan wanted to sleep because of how tired he was, but he ended up moving to the mirror to check his status.
Name: Nathan Reckmoon.
Level: 153
Race: Human
Quality: Good (High)
As a result, she followed their schedules and focused on getting stronger, specifically the preparation for the fourth familiar.
Before the training ended, Clovis couldn't help but ask, "What kind of familiar do you want? I have gotten some lists from Fenrir and the others. Maybe I can give you some suggestions."
"Huh? Are you sure about this?" Selena asked.
"Yes. It's fine. If you don't like the suggestions, you can always search for something else." Nathan nodded.
Selena and Serafina exchanged looks as if asking each other who would go first. After a few seconds, Sera turned her head and said, "In that case, I will go first. I think you have heard about this before, but I'm planning to summon a demon.
"I don't really mind any kind of demons, but because of my current familiars, I'm thinking about something that uses spells from afar. After all, Brunhild can be the vanguard for me. If we are fighting together, you guys can be on the front while I'm backing you up.
"This is my fighting style, so I think a demon who mainly attacks from a distance is good for me."
Nathan looked down, falling into deep thought. 'Since she wants a demon, I think it's better to offer some demons from Ars Goetia.
'And since she needs something strong, I think I should give her the name of high-ranking demons who excel in magic or spells.
'Or should I give her something like Lucifer? No. If I want her to be strong, I think I should tell her about demon kings. Maybe, Paimon?
'No, wait. Should I tell her about Asmodeus? He is a demon associated with lust, right?' Nathan stopped for a moment, imagining the lustful saintess. He soon shook his head while saying inwardly, 'No, no. If I do that, what will happen if Selena ends up summoning Lilith? It's going to be hell. If both Selena and Sera attack me at the same time, I'm going to die...
'What about Paimon? He's one of the most powerful demons and is known for his wisdom and teaching abilities. He will be a perfect fit to teach Sera. But with this, the balance will be tipped over, considering Brunhild won't be able to find any advantage against her.
'This is hard. I need to give her a demon who is strong but not too smart so that it won't overwhelm her. However, the demon has to be intelligent enough to avoid traps and the like.'
Nathan thought for a moment before turning to Sera with an answer.