Does 'Wunderbare Mecha' Have A Sequel Or Spin-Off?

It was the tenth year of the Mechanical Civilization. My girlfriend, who always spoiled her brother to an unreasonable extent, orchestrated my death. Luckily, I was reborn seven days before the arrival of the machines. I bought a heavy-duty truck and evolved the strongest mecha. Close-combat mecha, long-range mecha, weapons, shields, funnels, modules… This time, I wanted the best of everything. My name is Victor Wild. Born to be a victor, born to be wild.

Amanda Jackson, the daughter of a rich tycoon finds herself in hot soup on the day that is supposed to be her engagement day. She is happy because her childhood sweetheart and lover will be back and she thinks they will live happily ever after. Little did she know the schemes and traps waiting for her to fall into. But God gives her another chance as she reincarnate and swear to make those who made her suffer pay.....

A witch who has lived for thousands of years has grown bored with her own life and decided to leave it. Since she is an immortal, her soul cannot leave the world. However, what she can do is transfer her soul to another body. By a stroke of luck, she happens to enter the body of a princess. She was considered a miracle because when the Empress gave birth to her, the princess instantly died, along with the Empress. What the witch didn't know was that she has entered such a predicament. She has to endure the love of the cruel Emperor and possessiveness of the crazy twin princes! What will her life be at the hands of such a loving family? In addition, it seems that this body contains mana that was lost in the royal family centuries ago!

After obtaining the Mech Designer System, Ves aims to create the greatest mechs in the galaxy! In the far future, the galactic human civilization has entered the Age of Mechs. The countless lesser powers of humanity have come to adopt mechs as their main weapons of war. Only a small number of humans have the right genetic aptitude to pilot these destructive war machines the size of buildings. Born to a military family in the edge of the galaxy, Ves Larkinson is one of the many people who lacks the talent to earn glory in battle. Instead, he became a mech designer. Helped by his missing father, Ves has obtained the mysterious Mech Designer System that can help him rise in the galaxy and beyond. His mechs based on the principles of life quickly allows him to rise to prominence. Powerful and highly compatible with mech pilots, his products have the potential to take the market by storm. However, success does not come easily, and countless challenges bar his ability to sell his mechs to a market eager for innovation! With the sins of the human race in the galactic arena slowly catching up, Ves must navigate the perils of the ultra-competitive mech market and maintain control over his growing organization of misfits. This is the golden age of mechs. This is the golden age of humanity. The question is, will it last? "Any challenge can be overcome as long as I design the right mech!"

Al, was thrown into another world for no apparent reason. A new world filled with magical things. However, this wasn't the first time he had been reincarnated. He thought he was just an ordinary youth, but it turned out that his identity was so extraordinary in his first reincarnation. There were his harems still waiting for his arrival. Will he meet them soon and what will happen?

“No matter how many times we turn back time, in the end, you and I will still be enemies. Don't you understand? This tragedy will never end until one of us dies.” In her previous life, Ariana lived as a stupid duchess who gave up her name just for the crown prince. Her mistake left her territory destroyed, her entire family annihilated, while Ariana was poisoned and abandoned after she was useless. In the end, Ariana ended her life by jumping from the top floor of the castle she lived in and dying regretfully. Given a second chance, Ariana returns to a time when the tragedy had not yet occurred. Ariana realized that the second chance was a chance for her to make up for all her mistakes. The girl was determined, that she would become a useful duchess for the kingdom she loved. War, battle for the throne, and a grand conspiracy will accompany Ariana on her journey to becoming the only duchess in the Kingdom of Sigmund.