Endless Plunder in High School DxD

On a side note, after stepping down from her position as Demon King, Serafall also found some leisure time and began to focus on promoting the Magic Girl culture. 

She traveled around making movies and TV shows, aiming to spread the glory and culture of Magic Girls worldwide.

Since they had held the wedding together, Serafall was also one of Tenraku's wives. As her husband, Tenraku naturally supported her efforts to promote the glory and sacredness of Magic Girls. For a while, Tenraku also accompanied Serafall in making movies and TV shows.

Of course, regardless of whether the movies or TV shows were good or bad, Serafall always played the role of a righteous Magic Girl, while Tenraku portrayed the role of an evil boss. In every movie or TV show, he would be tortured hundreds of times by Serafall.

Back when Tenraku had bullied Serafall ruthlessly, and even now, when he was being bullied by her in movies and TV shows every night, it didn't bother him much. 

As Tenraku and Serafall's identities drew immense attention, anything they did attracted significant interest. 

Even the movies and TV shows they made, no matter how mediocre, became extremely popular, let alone the fact that their productions were already of high quality. Therefore, they gained tremendous popularity.

As for the affairs of the Saints and Demons Religion, Gabriel and Asia were mostly in charge, so Tenraku didn't have to worry about it. 

Losing his path as an international star, Tenraku was at a loss for what to do next. However, before he could think of finding something else to do, something unexpected happened.

It was around two years after Tenraku and the girls' wedding when their children started to be born, one after another!

It was said that the stronger the race or existence, the more difficult it was to conceive offspring. However, after the wedding, Tenraku and the girls became even more affectionate, and after countless attempts, they finally succeeded.

Throughout the years, the fruits of Tenraku's union with the girls gradually arrived in this world.

There was Alice Gremory, the daughter of Tenraku and Rias, Youna Sitri, born to Tenraku and Sona, the twins Kamiya Airi and Kamiya Marina, daughters of Tenraku and Asia. 

Himejima Akane and Himejima Shiori, daughters of Tenraku with Akeno and Suzaku, Helmwige, daughter of Tenraku and Rossweisse, Beiyat, daughter of Tenraku and Xenovia.

Kamiya Mai, daughter of Tenraku and Irina, Dina Phenex, daughter of Tenraku and Ravel, Erstigne, daughter of Tenraku and Elmen, and Kuroyuki and Shirayuki, daughters of Tenraku with Kuroka and Koneko-chan.

Furthermore, Yasaka, Princess Abe Kiyome, and Seekvaira's bellies grew larger day by day. Even Tenraku's Queen, Yubelluna, gave birth to a daughter named Baballuna!

All the children born to the girls for Tenraku were daughters. This was not a coincidence but a deliberate choice made by Tenraku. 

While sons would have been preferable for the sake of lineage, Tenraku Rias and the girls, with their near-eternal lives, didn't need to worry about succession. Thus, raising a group of daughters seemed more endearing.

Additionally, as Tenraku took his mother's surname, most of his daughters followed their mothers' surnames. Several of them were destined to inherit the family of their mothers. 

For example, Alice would inherit the Gremory family, Youna the House of Sitri, Shiori the Suzaku name along with the Himejima family, and Seekvaira's future daughters would inherit the House of Agares, and so on.

This was inevitable. After all, Tenraku had married the daughters and heirs of various families. Now that he had daughters of his own, it was only fair to return the favor.

Tenraku adored his daughters immensely. Since Rias and the others had their own responsibilities and careers, it was Tenraku, the irresponsible Holy Lord-sama, who had the most time. 

He decided to abandon all other affairs and became a full-time dad, nurturing these adorable little ones like Amaterasu, thus becoming even closer to his daughters than their own mothers.

As the daughters grew older, they reached the age of schooling. Although Tenraku could have provided them with the best education in Heaven, he and the girls ultimately decided to let their children experience the real world by attending school in the Human World.

Of course, their schooling couldn't be entirely ordinary. When the daughters attended kindergarten, Tenraku became the director; when they entered elementary school, he became the principal; when they reached middle school, he became their sensei; and when they entered high school, this extreme daughter-con became their classmate!

After nearly thirty years, Tenraku once again stepped into the campus of Kuoh Academy as a student in the high school division. 

Even Tenraku himself couldn't help but marvel at the irony. It was here that he had met and fallen in love with his wives, passing notes to them during class. Now, he was back with his daughters, a twist of fate indeed.

The grown daughters were like replicas of their respective mothers. Alice had a voluptuous figure and beautiful red hair like her mother. Youna sported shoulder-length hair like her mother and wore glasses despite having perfect vision. 

Kuroyuki had the same mischievous personality as her mother Kuroka, while Shirayuki was as gentle and obedient as her mother Shirone. Mai, Beiyat, and the other daughters mostly resembled their mothers. 

Even Airi and Marina were devout believers in their father, just like their mother Asia.

Moreover, upon learning about the high school experiences of their mothers, Alice and Akane revived the Occult Research Club, which had been abandoned for decades. 

Youna joined the Student Council and became its president, planning to assist her mother's school after graduation. Tenraku also rejoined the Kendo Club, becoming its president to relive the feelings of the past.

Due to certain circumstances, the Kendo Club of Kuoh Academy had always been a training ground for the Sword Princess Guard. Talented girls with aptitude and talent in kendo were sent here, from elementary, middle, and high school to university. 

Here, they received the finest guidance in swordsmanship and indoctrination. After graduation and passing the assessment, they would become proud members of the Sword Princess Guard.

As Tenraku relished the nostalgic campus life, accompanying his daughters' growth, he once again indulged in his fallen tendencies for three years at Kuoh Academy. How many young girls' hearts had he troubled in the process?

Of course, to maintain the image of a perfect father, Tenraku never did anything inappropriate in front of his daughters. 

He thought he had concealed it well, but in truth, his daughters were well aware of his misdeeds. They simply didn't expose him out of consideration for their hopeless Otou-Sama.

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