Milles, Knight of Anal Tyranny ~Impregnated by Lusty Tentacles at the Ends of Oblivion~

Kasumi, a skilled resistance soldier, battles an oppressive enemy regime in a tense, stealth-driven world. Joined by allies like Karakal and Puma, she undertakes perilous missions to undermine the enemy.
Will she be able to succeed and destroy all evil, or will she succumb to the growing temptations in her path?

Uchihama Academy has seen an increase in enrollment in recent years and as a result, a new school building will be constructed. The story takes place during the final school festival in the old school. All the club leaders decide to give it their all to make this the best school festival. Sou is a member of the notorious astronomy club, which basically solves the various issues in the student council's place.

On one day, he stays in the school late at evening because he got slightly injured by the judo club and is healing his wounds in the infirmary. Suddenly, the building shakes. Shocked, he runs up the stairs to where the shaking seems to have centered, and there he encounters a mysterious naked girl, who at first appears to know him. On the next day this girl, Yui, seeks out the astronomy club, expressing her desire to join.

At the Saint Michael Girls' School... festivities erupted among the girls of the annex. The reason for their celebration is the Best Couples poll being held at the main campus. The students at the annex, who look up to the girls from the main campus, decided, "Let's have our own Best Couples!"
...It was always inevitable.
And so, the fairest and most intimate couples were nominated...

The first couple is a pair of childhood friends, Misawa Nagisa and Takahata Rina. The second couple is a pair of twin sisters, Kimishima Ai and her younger sister Aya. And finally... The transfer student who saw this whole thing as no concern of hers, Onohara Hazuki, is shocked to hear that she too, was chosen to be among the Best Couples.

Moreover, her partner is the sheltered young debutante, Suoh Manami. Actually, Hazuki has secretly been crushing on the impeccable Manami... But the truth is, they're far from a couple, and while their classmates may cheer them on, it's all in vain.

But then... Hazuki works up all her courage to ask Manami to become a "Best Couple" with her, and...

Under the rule of two great kingdoms, the continent of Maygard once enjoyed a period of prosperity.

However, that prosperity became a thing of the past once the continent came under attack from the Demon King Hamehameha and her formidable magical power... Since then, humanity has gradually been losing ground to the Demon King's forces.

With the survival of humanity at stake, a Hero arises to defeat the Demon King. Heading on a journey together with new allies and two princesses with whom he overcame a sage's trials, the Hero seeks to obtain a sacred relic which is said to vanquish demons.

However, the Hero and his party meet an untimely demise when they encounter a surprise-attack by the Demon King. With humanity's last hope lost, it seemed like the world was all but in the hands of the Demon Lord...

In his fading state of consciousness, the Hero extends his arm towards his captured party members. In that moment, the Hero hears a voice pleading for help somewhere deep in the darkness.

"Someone please help me..."

Drawn to the voice, the Hero's spirit is summoned by Julietta, a princess from a faraway land being held prisoner in the Demon King's castle. The two quickly figure out that Julietta's desire to escape and the Hero's desire to rescue his party members are aligned with one another.

A world where dragons have been hunted to extinction by humans.
The disciple of the master swordsman, Reiri, is still trapped in a nightmare from 15 years ago.
“A hometown turned to stone,” “A black dragon,” “A man playing the flute”…
Just as she had almost given up, thinking there was no way to find out the truth, she receives news that a “black dragon” has appeared.
Unable to stay here any longer, Reiri leaves her familiar home and sets out on a journey.
A journey to face fate, conspiracy, and herself…