Harem Overlord

"That's such a huge advancement!" Kiana exclaimed as she saw Watanabe's lightning travel 10 meters in a straight line without going haywire.

Watanabe herself was surprised but kept herself under control her lightning extended even further before going haywire at 12 meters.

She then removed it before turning to look at Kiana. Kiana moved forward as her shoulders shook in excitement.

She summoned her lightning as it appeared alongside her elbows and danced around her fingers. The lightning shot out from her hands as it started racing through the air with deadly speed.

It easily reached 15 meters before Kiana began to struggle a little. She suddenly let go of the lightning as it hit the sand with a small explosion.

"That was much harder to control than before." She said with a surprised expression as Kai nodded.

"That's because the quality and strength of your lightning have improved. It will be much harder to control it than before but if you manage to master it, you might become a top-level lightning user." Kai explained as her eye started sparkling.

He then turned towards Watanabe who was clutching her fist with a resolute expression.

When she saw Kai looking at her, she just smiled at him that he could easily decipher as a fake one.

"Levina, you go and train Kiana. I will train Watanabe." Kai said as Levina nodded.

"Can you show me that technique you used to travel here at such a fast speed?" Kai heard Kiana ask Levina as the two girls moved away towards a different section of the island.

"Her powers are bothering you, aren't they?" Kai asked Watanabe as she slowly nodded since there was no point in lying to Kai.

"I can't believe that I am jealous of my granddaughter's potential." She said with a bitter smile as Kai shook his head.

"It's natural for you to feel this way. If you didn't have a shred of jealousy towards her, I would probably recommend you to become a sage." Kai said as Watanabe gave him the smallest of smiles but it was a real smile.

"Kiana is also much younger compared to you whereas you have spent most of your time in secluded cultivation. You sure do have talent but Kiana's talent out shadows yours. You can practice and try to catch up to her but she will keep outgrowing you." Kai told her the truth as she nodded.

There was no point in giving her false hope so Kai decided that telling her the truth was the best thing for her. He however had another plan in her mind.

"But there is a way by which you can catch up to her talent." Kai added as Watanabe suddenly looked into his eyes as she tried to determine whether he was telling the truth or not.

"I usually don't lie about such serious stuff. Though the method is dangerous and it might give you many fatal injuries that even I cannot heal, it will guarantee that your talent will increase." Kai explained as Watanabe's expression tightened.

It was between staying in the shadows of other people or risking her life to gain a chance at becoming more powerful.

"Whatever the method is, I am ready to do it." She said with confidence as Kai nodded.

"The method is something known as a lightning tribulation. It is taken by people who have normal colored lightning and if they survive the tribulation, the color of their lightning g changes depending on what they are best at. White lightning means offense, black lightning means speed and deadly aimed blows, green lightning is used for traps and strategies whereas the last one, the blue lightning is used for defense." Kai explained the various types of lightning to her.

"Than what about your golden lightning?" She asked as she raised her eyes in curiosity.

"Golden lightning is a special type of lightning g which can only be acquired if you have the elemental ruler of lightning's, in other words, Levina's blessings. But she has already used half of her blessings on me while her last blessing was gone to the land of the lightning royal family. But it drains the user's energy by unimaginable amounts and Levina herself rarely used it while she was younger." Kai explained as Watanabe nodded.

"Then how can I take this lightning tribulation?" She asked as Kai suddenly moved forward with golden lightning traveling throughout his right hand.

"You only need to know someone with golden lightning. I just have to transfer some of lightning to your body and your lightning will merge with my lightning. You will then face a series of lightning attacks and if you survive them, your lightning will evolve." He explained as he raised his hand and looked at Watanabe's right hand.

She took a deep breath before she touched Kai's right hand and felt lightning travel from his hand inside her body.

She could feel the live sparks traveling in her blood as they slowly merged with her body. Her own lightning suddenly started raging around her body as she released purple sparks of lightning everywhere.

"Ahh!" She suddenly screamed in pain as she slowly felt her eyes burn. Kai created a barrier around them to not let any attacks destroy their surroundings as the sky rumbled and the sun disappeared behind dark clouds.

Different colors of lightning traveled inside the clouds as they rumble loudly before releasing a white lightning bolt of energy at Watanabe.

"You can either try to dodge it or destroy it. Just remember that you should never charge it head-on!" Kai shouted advice at her as she gathered some lightning in her palms.

As the lightning bolt was 15 meters away from her, she opened her palm as two webs of lightning shot out from her palm.

They were in a crisscrossing pattern as they moved forward in the air and wrapped themselves around the lightning bolt.

The bolt easily broke through the first lightning web but it was stopped by the second one as it fell down and dropped in the ocean.

"Three more to go." Kai said as the clouds rumbled before releasing another lightning bolt.