Endless Plunder in High School DxD

Several months later, Tenraku and the girls began their university life with Rias.

No longer did they have to fight powerful enemies every other day like they did in high school. At most, they occasionally engaged in Devil transactions and cleared out foreign-shaped resentful spirits and lost Devils. Finally, Tenraku and the girls could enjoy a period of relaxed campus life.

Although battling powerful enemies was thrilling, this peaceful life was also comfortable and enjoyable.

To facilitate their movements, Rias applied to establish the Occult Research Club at the university, while Sona, who was determined to improve the Underworld's education system, continued to work with her Peerage members in the Student Council.

Although starting anew, with Sona's excellence, after a year, she stepped down as president, having garnered overwhelming support, and was re-elected as the Student Council president of Kuoh Academy's university division.

As for Tenraku, he fulfilled his promise to his fellow club members and rejoined the Kendo Club. However, he didn't follow the conventional path like Sona did in becoming the Student Council president. Instead, he took down the previous club president as soon as he joined and brought the university's Kendo Club under his control.

It's worth mentioning that Seekvaira, who had also pledged herself to Tenraku, moved into the Kamiya Family's residence. Like Tenraku and the others, she entered Kuoh Academy's university division. Partly to fulfill her family's mission to foster a relationship with Tenraku, and partly to experience life in the Human World.

Previously, Seekvaira left an impression of elegance, beauty, and competence. However, this princess of the House of Agares surprisingly had a fondness for robots and Gundam, typically enjoyed by boys. 

She even established a Gundam Club at the university, which surprisingly attracted many members and became quite popular.

Overall, compared to the troubled times in high school, university life was filled with more joyful routines.

They deepened their bonds with Rias and the girls when there were tasks to be done, and when there was nothing to do, Tenraku would tease the pretty seniors at school. Tenraku's university life was both fulfilling and decadent.

However, during university, something significant happened. Tenraku, along with Ophis and Lilith, ventured into the Dimensional Gap.

The Dimensional Gap was Ophis's homeland, from which she was expelled by Great Red. Reclaiming the Dimensional Gap and eternal tranquility from Great Red had always been Ophis's aspiration.

Although Ophis was now half the strength she used to be due to the creation of Lilith, she devised a plan to regain her former power by fusing with Lilith to become the true Dragon God of Infinity.

After numerous attempts, Ophis actually succeeded. Upon merging with Lilith, she not only regained her status as the true Dragon God of Infinity but also became even more powerful than before!

Thus, witnessed by Tenraku, Ophis and Lilith merged and engaged in a monumental battle with Great Red in the Dimensional Gap.

As two legendary beings at the pinnacle of the world, the Dragon God of Infinity and the Red Dragon God Emperor battle shattered the heavens and the earth, tearing apart the fabric of space and time. If Tenraku hadn't used powerful barriers to control the effects of the battle, it wouldn't have been surprising if the entire world had been destroyed.

The battle lasted for several days and nights, ultimately ending with Ophis, now stronger after the fusion, winning by a slight margin and reclaiming the Dimensional Gap and eternal tranquility.

As a result of this battle, the once formidable Great Red transformed into a cute and adorable loli dragon, becoming the mascot of the Kamiya Family and, like Ophis and Lilith, the third pet cared for by Tenraku.

As for the Dimensional Gap, Ophis had no intention of keeping it all to herself. Occasionally, she would take Lilith and Great Red for a spin inside, and sometimes even Ddraig, Albion, and Tiamat would join them for a stroll, turning it into a playground for the Dragon Gods and the mother Berserker Dragon.

After enjoying four years of carefree university life, upon graduation, Rias officially took over the affairs of the Gremory family as the family lord. 

Sona, as the principal of Auros Academy, began to pursue her dreams and career. Seekvaira and Abe Kiyome, along with a few others, took over the affairs of their respective families.

As Rias's Queen, Akeno continued to support her, while Asia, as the Saintess of the Saints and Demons Religion, began to oversee the affairs of the Saintess Church. 

Xenovia and Irina, former Holy Sword wielders of the Church, now served as Holy Sword wielders of the Saints and Demons Religion, executing tasks for the Church while helping to train new talents.

Rossweisse's dream was to establish a school in the Underworld to teach Northern European magic and have Devil women serve as Valkyries. 

Tenraku fulfilled her dream by establishing a massive Valkyrie Academy in the Phenex territory. He even allowed girls from his believers who aspired to become Valkyries to join Rossweisse's school.

As a result, those who were not originally Tenraku's believers were influenced by their classmates and became believers of Tenraku. Rossweisse's academy became an exclusive school for nurturing Valkyries under Tenraku's care.

Each of the girls had their own dreams and careers, and naturally, Tenraku was not idle either.

After several years of development, the Saints and Demons Religion now had believers all over the world, numbering in the tens of billions. With the establishment of armed forces, the Saints and Demons Religion had become the top power organization in the world!

In the past, Tenraku would delegate the affairs of the religion to his believer girls, intervening only when significant matters were reported to him through prayer. However, now that his university life had ended, he naturally had to start seriously dealing with some of the religious matters.

Thus began Tenraku's busy days.

Today, he would visit Northern Europe, tomorrow he would go to China for exchanges, the day after tomorrow, and so on. The schedule that Grayfia and Frayfia laid out for him extended thousands of years into the future, causing Tenraku's mouth to twitch.

He had climbed to the top of the world to control his own destiny and enjoy life, not to become a workaholic!

Initially, Tenraku pretended to work diligently for a few months, visiting various places as the Holy Lord of the Saints and Demons Religion, handling various matters. However, a few months later, he couldn't even be bothered to pretend anymore.

Slamming his hands on the table, he quit! 

Today, he'd go sightseeing here, tomorrow he'd travel there, the day after tomorrow he'd indulge in gourmet food somewhere else. He was just a carefree wanderer.

Of course, this was just a temporary tantrum. Once it passed, he still had to do what needed to be done.

However, even when he did work, it wasn't like before. Tenraku delegated most of the affairs to Gabriel and her team, only dealing with a few important matters himself, making his life much easier.

In his free time, he would joke around with the old man Odin, have a drink with Zeus, and when he was in a good mood, he would go to Mount Meru to see Śakro Devānām Indraḥ's stern face. 

After finishing work each day, he would return home to have fun with Rias and the girls. Surprisingly, he found that he quite liked this routine after getting used to it.

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