A year passed and Rain already began to learn more complicated magic. Even if it was a long time for normal humans, for both of them it was nothing. As Rain has lost all of her memory, she had no problem with the extended lifetime.
Merlin had in this year made an important discovery. She could use magic rules, but only if it was stored in an object. She could extract the magic rules and use them in her spell. After learning how to do this she wanted to learn everything she could not do with magic. This is because her unique magic abilities were not effective for it.
It was a year ago that Merlin had moved in. The hours looked different than before. It was very clean and something, which looks like normal humans was standing in the room and cleaning it. They were the golems Rain created using magic. The golems had even now no power but could clean the house.
The dynamic between Rain and Merlin was now very good. Merlin had spent most of her time researching and had no time to rest. The rain had made a plan for how to do her main mission. Her plan was now to do some side mission she could get from the mission. The only problem was that only a couple are from each world.
There were many interesting missions. You could already see that he can go into all worlds he wanted in the future. Some missions for this world were:
[Kill 1000 demons]
[Work for Meliodas in the bar]
[Kill a member of the 10 commandments]
All the missions had lower rewards than character missions so Rain didn't actively try to do them. She couldn't do the demon ones because they were sealed and Meliodas was not jet a bar owner.
The mission she could do now would need her to leave Merlin's side and then her mission was not completed. Now, most of the time just wait for something to happen. Rain now only had an interest were a few Hobbies she took from the 'original' Rain
The next 4 years went on without a problem. In the house, all the cleaning was done by the Golems. Rain even build her first Robot with a power level of 2000. This could defeat most normal fighters. Merlin has made extremely important discoveries with magic rules and can now if she has a source of magic rules, use them to an amount that normally needs 100 years to train.
Rains magic ability also gets better, she can now cast difficult speeds and even some that has now of no use to her because Merlin made them use with her special ability. But she learned that, if she gets a character with a magical breeder reactor, Rain can use them.
The relationship between the two was now so good, that they talked about many things already. As Rain can not tell her that she is reincarnated, she told Merlin to get her to say something about her past the story of the 'original' Rain.
Merlin has told her about her time in the first demon war and how strong they were. Rain also told Merlin that she was not at full strength, because the World traveling had weakened her. That was something she told only because Rain wanted to get Merlin's full trust that she and the people of her 'world' also were not bad.
This could be of use because her main mission is to kill the demon king. Rain also asked Merlin if she could go out and explore the world. This was said under the explanation that the demon lord said, that Rain should explore the world as her second most important thing to do.
For Merlin that was fine as long as she gets items where she can draw magic rules out of them. This can allow her to train even if Rain was out of the house. This was for Merlin the most important task, because over 3000 years she already learned everything she could about Magic. If she wants to be better at Magic she would need to make her speel every time.
The side mission I now have in mind is the easiest to do now.
[Side Mission: Explore the Kingdom of Liones.
Reward: 10 system points. ]
Now she was ready to go tommorow. As much as she knows of the story she should be able to meet one of the sins there.