A promise

"Mom let's go shower everyone together." Rias said as she came inside the room. Akeno and Koneko also come inside following her.

Venelana looks at Rias and asks "did you finish your training already?"

Rias took out her tongue and said "yes I am done."

Millicas shook his head and thought 'no wonder she lost to a chicken even with so much power and potential.' Millicas is speechless at her easygoing attitude.

'I need to work on this. I want my woman to be strong. And she needs some work on her thinking towards reality.' Millicas makes plans for her.

Rias suddenly asks "why are both of you naked during study?"

Venelana looked at Millicas and looked at Rias and said "I was teaching him about women's bodies."

Akeno blush hearing Venelana. Koneko is still standing there expressionlessly.

Rias came beside Millicas and said "you can ask me for that." Venelana said "I am teaching about women, not little girls." She then laughed.

Rias replied back angrily "I am already grown up. I am not a little girl." She then pulled Millicas from Venelana and said "let's go Millicas, we will go to shower and leave this old woman behind."

A vein pops up on Venelana's forehead. Her mouth twitched while listening to what her daughter said about her.

She shook her head and followed them inside her bathroom.

A few moments later.

All 4 of them sit side by side on their respective stools and use shampoo in their hair.

Millicas is inside the tub and looks at them with his chest resting on the tub wall. He looks at the scene and marvels at it inside his head.

All of them are naked facing him and there is no smoke to cover their sacred part for the sensor.

Akeno already developed a D cup breast. Rias is on the way. She is still a C cup. Koneko is still in her A cup which may change into B but that's that unless she accepts her true self.

He then looked at them between their leg. Akeno and Rias both have half blooming flowers which will completely bloom by next 2 years. Koneko is still in her initial state.

He suddenly thought of something and chuckled. He rested his chin on his hand and asked "grandma why all of you have different hair down there. You have the most. But aunt Rias and Akeno have a small amount of them but Koneko doesn't have any like me?"

Venelana chuckled hearing his question. Rias also smiles. Akeno blush but deep in her eyes she actually wants to answer herself.

Koneko looks down at herself then looks at Venelana and Rias. She then looks at Venelana's eyes and waits for her answer. Though she is also 12-13 years old she doesn't talk much with others. So she knows very little about many things.

Venelana looks at Rias and Akeno and smirks as she looks at Millicas and replies "it's a proof of adulthood. Which I am but Rias and Akeno are just on their way."

Rias smiling face stops and looks at her mother with anger. 'She again said I am a kid'

Venelana ignored her daughter's hateful eyes and continued "as for you and Koneko, you will also have it when you get older."

Koneko nodded her head as if she understood. She then stood up and went towards the tub. Millicas move and let her come inside. She nodded to Millicas and got inside the tub.

She dipped half of her body and smiled a little. She closed her eyes and enjoyed the hot water.

Millicas look at her cute face and smile too. 'Kawai' he thought.

After that One by one everyone came inside the tub. Venelana sat on Millicas' right and Rias sit to his left. Koneko got up and sat in front of Millicas and leaned on him. Akeno sits beside Rias.

~scene change~

"Millicas, why do you want to go to the human world?" Akeno asks Millicas while she controls her player in the game.

Koneko is sleeping on his lap like a cat. She didn't want to listen to anything else nor did she care. Rias is hugging Millicas from behind with her breast on his shoulder.

Millicas also controlled the other player and replied "I want to see how it is like there. I also want to stay with all of you."

Rias hugged him tighter and said "of course, you can stay with your aunt everywhere."

Millicas come to play video games the moment he remembers about it. This is very high tech and all the latest games are here too. He wants to experience this type of game too.

"I win again," Akeno said as she put down the Controller. Millicas looked at Akeno and said "big sis Akeno you are very good at this."

Akeno looked at Millicas and said proudly "of course." She then looked at Millicas and said "you can become one too if you play with me."

Rias looked at her best friend and said "he is a genius. He will surpass you sooner." Akeno looked at Millicas and nodded her head. She knows about Millicas genius intellect too.

Akeno suddenly gives Millicas a eye smile and ask "Millicas what was madam Venelana teaching you about girls body?"

Millicas look at Akeno and smirk inside. He knows about her curiosity over sex is always the most in the group. He acted normally and said "I ask grandma to show me what makes girls happy."

Black lines appear on Rias forehead. She turns Millicas head facing her and asks "did she kiss you?"

Millicas looked confused and said "I know about kisses. Why should I ask her that?" Akeno Replied to him "it's a different kind of kiss. For this you kiss mouth to mouth."

Millicas looks confused and shakes his head. He replied "no" Rias sigh but Millicas asked "can this kiss make girls happy?"

Akeno came in front of Millicas and said "yes, it is also proof of becoming a lover."

Millicas looks at Akeno and asks "without this kiss you can not become a lover?" Akeno shakes her head seriously. Millicas looked at Rias who also nodded in confirmation.

Millicas acted sad and looked down and said "Grandma lied to me?" Rias lifts his chin and asks "what lie?"

Millicas Replied in a sad tone "I wanted to marry grandma and you. She agreed to marry me but she didn't kiss me."

Rias smiles hearing him say he wants to marry her. She feels happy. On the other hand Akeno pouted and asked "you don't like me?"

Millicas said "yes I like you and Koneko too. But you are aunt's peerage. If she doesn't agree then I can't marry you."

Akeno looks at Rias and laughs with her hand in front of her mouth. Rias suddenly remembered about her marriage contract set by her father and became sad too.

Akeno stops laughing seeing her best friend sad. She sighed and patted her shoulder and said "we will find a way."

Millicas looks at Rias, he knows about her thoughts too. He didn't say anything and stayed silent. Rias saw Millicas silent and decided to think this later.

She smiled and said "you want to marry your aunt?" Millicas nodded his head. Rias lifts his head and faces him towards her. She then said "then we should become lovers first."

With that saying she leaned her face towards him and kissed him on the lips.

Akeno looked at them weirdly but she didn't comment. She knows the Devil's way of thinking is lot different. Marriage can be set anytime with anyone.

Millicas was shocked at first but he quickly became happy. Of course she is his dream wifu too. So why wouldn't he be happy when his dream girl kisses him.

Millicas took out his tongue and tried to invade Rias mouth. Rias was shocked at first but then she smiled and opened her lips and let his tongue come inside her mouth.

Soon their kiss turned into a very passionate kiss. They wrap their tongue with one another and taste each other's saliva.

Akeno looks at their kiss and looks at Millicas with shock. His passionate kiss makes her envious of her friend. 'Devil has good instinct from such a young age' She thought.

After another minute or two they stop and separate from each other as a bridge of saliva is made between their mouths.

Rias looked at her nephew with many thoughts in her mind. 'I can't believe I kissed him,' She thought. She then smiles and thinks again 'at least my first kiss didn't go to waste.'

She then said "we are lovers now. And in the future aunt will wait for you to marry her."

Akeno shook her head and said "big sister will also marry you if you marry her." Koneko suddenly sat up and looked Millicas in the eyes. Rias and Akeno look at her too. She was laying on Millicas lap all this time.

Koneko ignored the two and nodded her head to Millicas and kissed his cheek. Which means she will too.

Rias smiled at her peerage member and sighed. 'I hope I find a way to get out of this stupid marriage contract.'

Millicas also smiled and said "I will surely marry you. That's a promise." Akeno laughed when he heard what he said. Rias is happy too.

Of course they didn't have much faith in this. Her fate is sealed by someone else.

But they don't know that this Millicas is really a Devil and will do what he says.