How to become a demon lord

The next day:

After we woke up me and Hana are checking if Fumiko has woken up yet.

"Fumiko, are you awake?"- Hana knocked on her door.

"Yeah, wait a bit, I will get changed"- Her voice can be heard from the other room.

"We will wait for you downstairs!"- Hana and I descended the stairs and looked at the inn that we are staying at, we didn't get a good look yesterday so I hope I can get a good look at it today instead.

The interior is decorated with all sorts of flowers, most of which I don't recognize aside from a few species that I saw in my original world, I don't even remember what they are called.

There are 3 receptionists in total working at 1 time and a few butlers and maids taking care of the rooms that people sleep in.

"Sorry to keep you 2 waiting."- Fumiko is standing right behind us, she is wearing a long blue dress.

"No problem, you look so cure in that outfit Fumiko!"- Hana looked at Fumiko and hugged her then carried her in her arms.

"Well, I don't mind"- We walked outside to see a carriage waiting for us and the lord of Ikrel waiting for us there.

"Hope you 2 got a good sleep"

"Hana, keep him occupied while I talk with Sia"- I told her over the telepathic link, she looked at me and then she nodded, the lord looked at us in suspicion.

"Of course"- I said out loud and got first into the carriage, helping Hana get up. Acting like this was the best cover we had.

"Oh, I see, a true gentleman. I like that about you, what was your name again?"- He scratched his head in confusion.

"I am Hikaru, and she is Hana"- We presented ourselves again.

"Ok, thanks for reminding me"

Hana began talking to Lord Ikrel.

"Sia, now"

!The process to become a demon lord here is a little complicated. You need to meet the next requirements: 1. Fully evolved, you need to gain all the possible exp and be 1 evolution away from demon lord!

"Sorry to interrupt Sia, but this seems hard enough as it is right now"- How am I going to get that much exp? I need a few hundreds of levels.

!Let me continue, please. The 2 one is to have gathered 10000 souls from humans or other humanoid living being. The 3rd is to have several named subordinates, but it's more of an optional requirement. The 4th requirement is to have a safe place where you can evolve, you will be put into another long evolutionary sleep that will last about 2-4 hours and you won't be able to feel, hear, or attack during that time. And the 5th requirement is to have something called a Demon Lord Sproutling, this sprouting will offer you the chance to become a demon lord, but, it's hard to find all. That is it for the demon lord evolution!

"Getting the sproutling seems like the hard part"

!It indeed is, you will need 2 of them and 20000 souls to complete the evolution, plus you will need to evolve to your maximum evolutionary level before that.!

"Indeed. Sia, but now answer me, where do I get the sprouting?"- Why is dodging the question?

!You get them from defeating a monster that can cause a calamity on this planet. Monsters such as The Fenrir or Mentei-Mentei!.

"What are those? I know about Fenrir, but what about Mentei-Mentei"

!That is a monster that represents a large feline species, it spawns every 500 years or so. It is very rare but these 2 monsters have a 100% chance to drop a demon lord sprouting!

"Hikaru, this seems complicated, I don't know if I can defeat one of those monsters on my own"- Hana interrupted my conversation with Sia.

"I know you can do it, you are strong as well Hana, you have more skill than me with a sword, I may have more skills than you but you have more experience than I do"- Trying to reassure her, don't know what to do about this, she has fewer skills than me but her skills need to useful to do something at least.

"Sia, what can her skills do?"

!Her Primordial skill Lord of Beauty Aphrodite can make people fall in love with her in an instant, her other Primordial skill Lord of Compassion Afriel can calm people and have a mind manipulation effect on monsters.!

"I didn't know that my skills could do that"- I can hear Hana's tone getting more lively when she heard her skills explained by Sia.

"Well, those are useful. I have an idea of how you will use those skills"

"How? I mean I do have an idea, we might get some discounted prices at shops."

"No, you are going to mind-control some monsters and then kill them. We need to increase our level individually at some point."

"But one thing Hikaru, how are we going to get souls?"- Hana asked a little frightened

!You can get souls by killing humans and humanoid creatures, all of them posses a soul. You will need to sacrifice a lot of lives for you 2 to become demon lords. I suggest you kill bandits or other undesirable people to reduce the emotional trauma suffered by the 2 of you!- Sia stopped

It's already been a day, 1 more day until we reach Welcia again.

We reached Welcia, everything is tense, I don't know how to explain it but we are putting our plan into action, we are going to kill both lords and make it look like a murder-suicide. What are we going to do now? I came to care a little for Fumiko, I don't know what her reaction will be to seeing her father dead. What should I do? Hikaru, you idiot.