I Found Tiny Dungeon That Can Only Produce Metal Slime

Chapter 86: Final Day of Contract

「Yuuma-kun, Kotaro! Take a look at this magic ore.」

Aisha happily showed the magic ore in her hands to Yuuma and the president.

「Wow, that’s huge.」

「Several times bigger than the one I ate before.」

Both the president and Yuuma was marveled at the size of the 『Silver』 magic ore.

「Though there was no way to measure its exact size, it should be around five times bigger than the last one. The effect should be five times of the last one too.」

The president shook his head, smiling wryly as he saw Aisha speaking merrily like that.

「Anyhow, that should be enough for today. Time to go back.」

「You’re right. This is great harvest indeed.」

Since Aisha agreed with his proposal, they decided to go back.

◇◇◇

""

That night, in the room used by Yuuma and the president.

「A~h, I’m so tired… Yuuma, are you sure that there’s nothing wrong with your body?」

The president who was sprawled face up on his bed asked that question to Yuuma who was already burying himself into the pillow in the bed next to his.

「Yes, i’m really exhausted though.」

「Ri~ght.」

Properly speaking, they should be training around this time before taking a bath but, both of them were too exhausted to even think about doing that.

「What are we going to do for the next day, President? Are we going to dive into the dungeon again?」

「U~hm, tomorrow is the last day of our contract. I mean, I don’t think we’re going to dive again tomorrow. Tomorrow’s schedule should be the detailed examination of that silver magic ore, right? That would be the last of our job.」

「I… See.」

「We’ve been working like slaves. That’s why I want her to spare us from more work tomorrow.」

Thus, both Yuuma and the president fell asleep. Both of the exhausted men slept like a rock, they even forgot to turn off the light.

That time, they had yet to realize a certain fact.

Namely the abnormality of the mad scientist called Aisha Kisaragi.

◇◇◇

「Well then, Yuuma-kun, try to eat the “Silver Magic Ore” from yesterday.」

「Eh? Ah, okay. Are you sure that we only did such simple examination?」

When Aisha came the first thing in the morning, she told Yuuma to eat the magic ore after extremely simple physical strength measurement. Thus, Yuuma and the president were looking at each other with a dubious look on their faces.

「I thought we’re going to visit research laboratory for detailed measurement though…」

Aisha smiled lightly as she heard Yuuma’s question and the president’s remark.

「Well, we have no time for that. My contract with D-Minor ended by tomorrow after all. That’s why I’m in hurry.」

「Eh!? In hurry?」

Both Yuuma and the president became even more bewildered upon hearing such unexpected remarks.

「That matter aside, you should eat the “Silver Magic Ore”. There you go.」

Aisha gave a cup of water and the magic ore to Yuuma.

「Y-Yes…」 Said Yuuma as he took the magic ore, taking a glance curiously at Aisha at the same time. The latter was obviously looking at the former with glowing eyes, like that of a child when they saw their favorite hero appear in a Sunday morning program for the kids.

「Uhm… Are you sure I can handle this with my mana index? I mean, my meager mana index of 200 might be gone for good once I ate this…」

「It’ll be okay, Yuuma-kun. Your mana index should’ve been raised to another 300 after all those diving sessions. I can tell you that you’ve been growing.」

「Eh!? Really? I mean, we never measure my mana index in the last month.」

Never once did they measure Yuuma’s mana index with a mana measuring tool after they started diving into the Black Dungeon. That’s why Yuuma himself had no idea about the growth of his mana index.

「No need for that. Even without a mana measuring tool, I’ve memorized all the mana indexes of magic ore and monster. In short, all record of your growth, how much you’ve been dyeing your mana, and how much you have left.」

Aisha said so while tapping her finger on her head.

「The silver magic ore of this size only has 200 mana index, and the sum of mana index of all magic ore consumed by you until now is around 200. Since the total amount of your mana index is around 500, you still have 100 mana index left after consuming this 『Silver』.」

「I see, but still, I want to use magic too so I won’t dye my mana anymore for now…」

Seeing a begrudging look Yuuma’s expression, Aisha shook her head in disappointment.

「Yuuma-kun. You have to become strong first before you can raise your mana index. To become a top explorer, you can’t be stingy in dyeing your mana index. In your case, the shortcut to become stronger is by strengthening your physical abilities with magic ore. That’s why you have to become stronger first in this way, the rest can wait for later.」

Aisha urged Yuuma to swallow the magic ore with a smile on her face. Yuuma then realized that what Aisha said did make sense.

In fact, Yuuma wanted to consume a magic gem but he had no choice but to endure it for now.

Thus, Yuuma swallowed the magic ore.

◇◇◇

「Oi, AIsha… Are you serious about what you said just now? Is that silver magic ore’s mana index only 200? Are you sure that the total mana index of all the magic ore he ate in the last one month… Only 200?」

Kenzaki whispered to Aisha while Yuuma was in the middle of swallowign the magic ore.

「Hah? The hell you are talking about? It’s a big fat lie of course.」

「ALL OF THEM!?」

「The mana index of each bloody ore alone is 700. And he ate 23 of them. That alone amounted to 16100 mana index.」

「That much!?」

Kanzaki muffled his voice to prevent Yuuma from hearing his surprised voice. He couldn’t hide his shock from hearing so many mana dyed at once.

「As for that “Silver Magic Ore”, under assumption of the gram of the silver, its’ mana index should be no less than 1200.」

「1200… Then how much mana index he dyed in this one month?」

「According to my estimation, it should be around 20000.」

「Twenty… Thousand… And you said that it’s only 400 eh? You’re playing dirty you know!」

「Humph, I see no problem even if my lies are discovered by him.」

「Y-You shi*ty mad scientist!」

Even Kanzaki was really dumbfounded to see Aisha’s unabashed attitude.