We of the Gremory group were receiving a farewell from the underworld at the station in front of the main residence.
âWell then, Issei-kun. I look forward to the day we can meet again. You may return here any time without hesitation. Think of the Gremory family as your own family.â
Buchouâs father said that as many servants stood behind him.
âThank you very much! B-But, that is a bit too grand for meâŠâ
I was smiling bitterly, but Buchouâs mother also affirmed it.
âNot at all. Issei-san. Please take care of Rias in the human world. Since my daughter can be so selfish, I worry.â
âM-Mother! W-What are you saying!?â
Buchouâs face turned deep red. What a cute Buchou!
âYes! Of course!â
I hit my chest and nodded. Iâll take care of Buchou! It may be rude of me to say this, but Iâll protect the woman I fell in love with all my life!
ââŠUu, Iâm also being moved to tears. The future of my family is brightâŠâ
Buchouâs father was crying. Eeeeeeeeeh? Why, why?
Buchouâs mother sighed beside him.
âWait a minute, dear. Isnât this where the father is supposed to retaliate by saying something like [I wonât give up my daughter yet!]?â
âEven if you say that, Issei-kun seems to have surpassed my power already, so isnât it enough already? I think it will be fine even if I settle down soon.â
âPlease wait until Rias has graduated from high school at least before talking about retirement.â
???? He seemed to be getting excited, but about what?
âRias, send us a letter during your remaining summer holidays.â
Sirzechs-sama said that while carrying his son Millicas-sama in his arms. Grayfia-san was standing immediately behind them.
âYes, onii-sama. You stay well as well, Millicas.â
âYes, Rias-nee-sama!â
We had boarded the train and were giving our last farewells to Sirzechs-sama and the others from the window.
Ahâ.
At that moment, I noticed. Sirzechs-sama, Millicas-sama, and also Grayfia-san.
I saw two parents and their child in that three-shot. As I thought, it was like that. It wasnât a jokeâ.
Part 2
The return train.
I was being pressed by my untouched school homework.
Thatâs right! I had been busy since coming to the Underworld, but I had completely forgotten about this!
Furthermore, thinking back, didnât I spend off the important summer of my second year of high school on a mountain with a dragon? I wanted to cryyyyyyyyyyyy!
I had used my precious youth on surviving in that mountain! I didnât have any date with Buchou, nor did Akeno-san do any erotic things to me in my room!
I started on my Japanese homework while crying.
But, I did have some amazing experiences during my time in the Underworld. And I had done various studies. We were strongâin terms of power. However, in the case of opposing teams who took greater control than us, no matter how great our power was, we would lose depending on the tactics used.
âŠIf Iâm also going to play the games as a [King] in the future, I have to start thinking about tactics and the like right awayâŠ
Because, no matter how great my power was from the legendary dragon, if I recklessly plunged forward and fell into my opponentâs tricks, it will be an immediate game over! If I was taken out as a [King], my team would have to resign! Though I should have won overall in power, I was defeated by Saji in terms of techniqueâŠ
UwaahâŠIâm so anxious about the future.
I spoke to Buchou who was sitting in the seat in front of me.
âBuchou.â
âWhat is it?â
âIâve acted reckless until now in order to become a harem king. That is my goal, and my wish to become that hasnât changed even now. âBut, Tannin-ossan told me. That itâs a waste to set that as my final goal. So, I thought about it a little, but I think itâs useless to just aim for an ordinary harem. Itâs best if I can make a harem with an attractiveness that wonât lose to anyone and that is strong in the games as well.â
Buchou listened to my words and showed a very surprised expression, but she soon smiled.
âIt seems the summer training camp was a success. Meeting other devils in the Underworld seems to have been a big plus for you. We both seem to have learned and advanced forward a lot.â
Yes! I gave it my all!
Suddenly, Koneko-chan appeared thereâŠand sat down on my laaaaaaaap!?
I couldnât understand what was happening, butâKoneko-chan had sat down on my lap and was twitching her cat ears.
âK-Koneko-chanâŠ?â
I timidly looked at her face, and then,
âNyanâȘâ
She smiled with a smile across her whole face. Yeah. With just something like that, my brain flew off.
Asia had teary eyes, Buchou scowled with narrowed eyes, and Akeno-san was giving off pressure with a silent smiling face, butâŠ
Yeah! Cuteness is justice!
Like this, the train headed to the human world we lived inâ.
The time in the Underworld has been fun. It was a summer vacation I didnât think I would forget for my entire life.
As the train arrived at the underground platform on the human world-side, I stretched myself.
When I turned to look at Asia. A mysterious man with delicate features had drawn near Asia.
âAsia ArgentoâŠWe finally meet.â
âU-UmmâŠâ
Asia was bewildered. This was bad! Was he a pervert! I wonât let you put even a single finger on my Asia-chan!
âHey, hey, hey! What business do you have with Asia!?â
I came between them! But, the mysterious delicate man questioned Asia with a sincere expression.
ââŠSo youâve forgotten me. We should have met that time.â
The delicate manâWait, Iâve seen him somewhere before. The delicate man suddenly revealed his chest and showed a big scar there. It was a deep scar. Asiaâs eyes opened wide when she saw that.
ââ. That wound, could it beâŠâ
Asia? You remember him?
âYes, my face couldnât be seen back then, but I am the devil from that time.â
âââ
Asia became speechless at those words.
âMy name is Diodora Astaroth. That time you werenât able to treat it to the point where a scar wouldnât remain, but my life was saved due to your Sacred Gear.â
I had heard about Asiaâs past. She had been branded as a witch for saving a devil by chance.
âThatâs right, he was the devil who had been the trigger for Asia being driven out of the Church.
âDiodora? Youâre Diodora, arenât you?â
Buchou seemed to recognise himâŠAh, I remembered, he was at the meeting between young devils! The handsome high-class devil from that time! I think he was from the family of the current Beelzebub!
Diodora tenderly took Asiaâs hand and kissed it! Y-You bastard, what do you think youâre doing to Asia!?
I was about to leap at him, but without caring about that he spoke to Asia.
âAsia, I came to meet you. I apologise that I couldnât greet you at that meeting. But, I think the encounter between you and I was destiny. âI want you to be my wife. I love you.â
âHe had proposed to Asia right in front of me.
The hot summer had come to an end, and the autumn that would likely become long would soon begin.
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