I Kill to Get All SSS Abilities: From Outcast to Awakened - Chapter 48: Summoner

Guang Xiaoyu always thought her senior brother was a dispirited ordinary person, until one day, his pet cow crushed an entire group of Divine Kings with a single stomp.The black dog opened its mouth and expelled a Sword Qi, blocking millions of the Demon Race.The Earth Chicken that babbled every day turned out to be a descendant of the Ancient Phoenix!Ahhhh!Her worldview collapsed!Zi Ji: “Senior sister, it's terrible! The Demon Emperor is leading an army of millions from the Demon Race towards us.”Guang Xiaoyu: “Senior brother, help!”(This is a story about the Demon Emperor’s rebirth, the Netherworld’s daughter’s reincarnation, the protagonist's pet-keeping journey, and a call to everyone to love and care for small animals!)

[No fixed CP + wear books + brain hole cool text + women disguised as men + group pet]

Gu Lan crossed over and became the cannon fodder of the original book disguised as a man, counterattacked the protagonist of the original book who slapped her face, and lived in a dormitory full of sickly beauties.

Until one day, she discovered that her roommates were villains from other horror novels. After discovering the secret, Gu Lan thought she would be killed, but her roommates all looked at her strangely… Contrasted with cute Zhengtai, sickly and beautiful boy, split personality school girl, cold and stern school bully, romantic and noble son who plays Shura every day field.

- Description from novelbuddy

This is a story about Gong Lixin who was the young master of an ancient underground palace in the ancient times. He was raised by his master and forced to partake sexual relationships with numerous people to cultivate his Yin Body. His master who has a Yang Body was going to absorb him after he has reach a level to become stronger. MC refused and killed his master also dying at the same time. Then he transmigrated to the modern time and thinking he will enjoy peaceful life, the end of the world arrived.