A few weeks after Sona and Rias had their first kiss with Hiroto. The four years old Hiroto is getting pestered by them daily because they want to feel that sweet and fluffy feeling.
But Hiroto would only placate them with a few hugs and head pats. He is doing this because of what has taught him a few days after he had his first kiss, although it was accidentally.
Tannin was no expert in love but he can see that a week ago, Sona and Rias became rather clingy towards his son. He doesn't know what happened but he knew for a fact that if his son grew up as a dense person, then that would be disastrous for these heiresses. So he decided to teach Hiroto about sensing your surroundings and feeling the emotions of the people around you.
As a warrior he have been in countless battles and he learned this ability because it was quite a great asset when on a battlefield.
Telling a dragon nearby to call out the little to come to the garden, he waited there patiently. After a few minutes, a small figure appeared in the entrance of the garden. He is wearing blue shorts, a white t-shirt and a pair of sneakers. He have a silver-blonde and straberry-blonde stips as the color of his hair, a healthy blemish on his white skin, a symmetrical face, blue eyes like the sky of the surface world and a beauty mark under his left eyes. This is Tannin's adopted son, Hiroto.
Tannin could help but nod on the cute clothing that his son is wearing. Tannin asked a colleague of him to buy these clothes for his beloved son in the human world.
"So son, how is you relationship with the heiress of the Gremory and Sitri Clan?" asked Tannin.
"Ah! Well that, I don't know Papa," Hiroto said truthfully while looking a little downcast. Hiroto is getting confused why he felt that fluffy feeling when their lips touched. It was so strange to him and, as a child with a lot of curiosity, he wanted to know why.
"Hiroto my son. I called you out here to teach you a technique that would be quite useful for you when you grow up," Tannin said in a serious tone. Hiroto just nodded when he saw the serious look on his face.
"Alright, it seems that you are quite ready. Let's start the training then," Tannin said.
After that, he explained Hiroto the specifics of this 'skill' and taught him different emotions that a human feels. Tannin chose humans as the subject of their lesson because the race have a lot of emotions that they express in different ways. What he didn't expect was that this kid was a genius and learned the 'skill' after a few minutes of lecture.
So Tannin tested if he really learned the 'skill' and called out some dragons to surround him and show different emotions while Hiroto was blindfolded. It shocked him to the core to see his son successfully name the emotions that the dragons are showing. It was quite a comical sight to see a chibi dragon having its jaws drop and eyes widened.
"T-That, it looks like you learned how to do it now son! Very good!" Tannin praised.
"Hmm? I didn't know it was that easy Papa," Hiroto said while cutely tilting his head.
'It took me centuries to learn this damn it! And you call it easy?!' Tannin shouted in his mind.
After that, Hiroto learned what these feelings directed towards him from Sona and Rias was. It was love, that fluffy and fluttering feeling was love. Learning this fact, Hiroto felt a bit awkward to communicate with the two heiress so he just tried to placate them with hugs and pats on the head. But that changed after the three of them played a dangerous game.
Rias and Sona is getting irritated because they are curious what that feeling they felt when their lips touched with Hiroto's was. Being the heiress of a whole clan, they were quite spoiled and they get what they want most of the time. But Hiroto refused to try it again. So Rias and Sona thought of a plan to try it out.
Next morning, the three played on the shack near the Gremory Garden. It was a shack where gardening tools are placed.
After they entered the shack, Sona spoke.
"What we want to play with you is a game called King's game! The person that will get the stick with a red tip will be the King and s/he can command the remaining players once. Since there is only 3 of us, then the king can order the two remaining people once," Sona said. Sona and Rias thought of this game in order to feel that fluffy feeling again. Of course they chipped the other side of the stick with the red tip in order to identify it easily.
After that, they picked the sticks and Sona got the stick with the red tip and Hiroto got 2 while Rias got 1. Then Sona ordered,
"Number 2 should touch his/her lips with number 1!"
Hiroto was shaken why this order. Seeing Rias who puckered her lips, Hiroto gulped before bringing his lips on top of hers. He thought that they thought this plan in order to feel that 'fluffy feeling' they felt when they did this last time. He just surrendered to his fate.
A few minutes passed and Hiroto and Rias is still immersed on the act which made Sona angry. She interjected between their moment and rode on Hiroto's lap before placing her lips onto his.
After this, Hiroto could no longer refuse the puppy dog eyes the two girls are giving him but only agreed to do this when it is only the three of them. He had the feeling that it would be bad if the adult knew about this.
(A/N: I will be writing these kinds of short stories to fill in the gaps of the time skips. It isn't much but please enjoy! Oh and some of the contents of short stories would sometimes be mentioned in the chapters but not so often so you can skip it if you want.)