The Older Brother of My Student is My Secret Crush - Chapter 1: The New Class Teacher.

In the year 241 of the 6th era, Constantinople was in turmoil.Emperor Constantine personally lead his army, which was completely annihilated. The pagan empire, riding on the wave of a great victory, annexed the entire eastern territory of the empire, and its military might pointed directly at the capital.The 17-year-old imperial princess Theodora ascended the throne in crisis, facing what was already a terribly damaged realm.Rome was about to fall.....................The wheels of fate spun wildly as a transmigrator appeared on the streets of Constantinople.“According to the original plot, it was only a matter of time before Constantinople would fall.” he pondered.“Perhaps I should first whisk away the empress.”(The book is categorized under game fantasy worlds, set in a magically altered Middle Ages, and another title is 'I Really Can't Lead This Team')

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

[Name: ??, Age: ??][Race: Mechanical Life][Profession: Mechanical Apostle][Level: Tier -6 (damaged)][Physique: ?????][Spirit: ?????][Description: A broken Mechanical Life, one of Mechanical God -'@#$^&#@@%^#!'s most advanced and powerful creations, from an advanced technological world.]“Is this the World of Gods? Can anyone become God? Then why am I still just a Tier-1 Spiritual planter?” Ram pondered, after looking at the Divine Creature for the first time.Ram reincarnated in this world without the ability to awaken any profession. As he celebrated becoming a Tier-1 Spiritual Planter, he discovered that Gods, Divine Beings, Evil Entities, and Nightmare Creatures were exploiting humans and other beings, manipulating them to harvest the power of Faith or Fear.Inexplicably, he became entangled in this conflict. But he was lucky enough to turn his destiny through... Evolving Spiritual Plants and Monsters using Life Energy and Spiritual Power, becoming Spiritual Plant Lord to fight against the Gods.[ Holy Source Seed: Sylvan Soul Tree][ Type: Source Seed][ Level: Same as host][ Quality: Holy][ Attribute: Life/Soul/Wood][ Description: A seed born from the fusion of the seeds of the Life Spirit Tree and Astral Soul Tree, transformed into a Holy Source Seed through a special method.][ Holy Source Seed Characteristics:1. As a Holy Source Seed born from both powerful entities it perfectly inherited the abilities of both the Life Spirit Tree and the Astral Soul Tree.2. Gains additional functionality with every upgrade.3. Binding the Holy Source Seed grants the host full access to all its abilities.][ Abilities: Life Spirit Tree][1. Life Spirit Body]: Converts the host's body into a Life Spirit Body, greatly increasing the host’s capacity for Life Energy and Spiritual Power by tenfold, while boosting recovery rate by 300%.[2. Kingdom Creation: Sylvan Soul Kingdom (Unopened)]: Upon activation, the Sylvan Soul Tree converts the host Spiritual Realm into a virtual forest that becomes the foundation of the Sylvan Soul Kingdom. This forest spans across dimensions, rooted in both the material and spiritual realms.[Effect]: The host becomes the Lord of the Sylvan Soul Kingdom, gaining the ability to expand and rule this virtual domain.][ Abilities: Soul Tree]:[1. Soul Tree]: At the heart of the Sylvan Soul Kingdom, the Lord can summon the Soul Tree, a sacred tree that acts as a conduit for life and death.[Effect]: The souls of those who die within or near the kingdom are absorbed by this tree, where they are nourished, healed, and can be reborn as Wood Spirits.[2. Soul Tree Seeds]: Host can create seeds of the soul tree that are connected to the mother tree, which can be planted outside the Sylvan Soul Kingdom.[Effect]: Souls absorbed by the Soul Trees are transported to the mother tree within a certain distance, depending upon the strength of the Sylvan Soul Tree.]

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.