Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e - Volume 15, Chapter 1: Secret Maneuvers

Ji Nai-tang paid attention to Cen Muqi for 12 years. This secret love had been hidden in his heart. When he finally couldn’t hide it, he sent himself in front of Cen Muqi, pretending to be a pig to eat the tiger and step by step planning to trap the golden thigh.

Ji Nai-tang: It is not that I look good, it is that you make me look good.

Cen Muqi: It turns out that it is important to have a boyfriend who will take pictures.

Ji Nai-tang: But you are not my boyfriend~

Cen Muqi: Can I apply for it?

Ji Nai-tang: What are you applying for?

Cen Muqi: Applying to be your boyfriend!

- Description from Novelupdates

Riku Barusak is a hard-working child. Despite possessing an innate superior physical strength and having withstood harsh training she fails to unlock her talent as a spiritualist. The failure results in her being thrown away by her family.

Abandoned, the only ones that extended a hand to her were the demons, the greatest enemies of the human race. Serving under them as a soldier she becomes a weapon of human slaughter, a fiend that should never have existed.

An incredibly athletic older brother, Tenryu Taiga. A programming genius girl, Tenryu Fuyuki. The two siblings separated for eight years ended up living under one roof again after facing the problem – a lack of funds for living expenses.

Fuyuki proposes a way to earn money, a core system deeply involved in people’s daily lives, a game that awards you money as a prize for defeating malicious bugs in cyber world, the 《Aries》structure. Taiga after becoming a warrior in the game relying on his inborn senses, is puzzled by the unfamiliar sensation.

One day Saionji Rui, Fuyuki’s best friend appears and is attacked by a mysterious bug― “I’ll be waiting, my prince.”. Hybrid fantasy battle of cheating siblings begins here!

Once upon a time, a hero had been summoned to a different world in order to defeat the demon king. After the war stretching 3 years ended the commendable hero slew the demon king. And he was forcibly deported back to earth after being dismissed.

Such bullshit!

Elves in addition to beast race, dwarfs and demon race. Even though I wanted to make a harem in the different world I saved! My dream will not come true on earth, where there is no magic at all. Thus, the hero returns on his own. Without the blunder of being extradited to earth this time, he will build a harem of his own in a different world.