Mushoku Tensei: Si voy a otro mundo, me lo tomaré en serio

Mushoku Tensei - Isekai Ittara Honki Dasu, Mushoku Tensei: Jobless Reincarnation, Pergi ke Dunia Lain Saya Akan Menjadi Serius, Перерождение безработного (манга), เกิดชาตินี้พี่ต้องเทพ, 无职转生～在异世界认真地活下去～, 無職転生～異世界行ったら本気だす～, 無職轉生～在異世界認真地活下去～, 무직전생 ～다른 세계 가면 진심 낸다～

Synopsis Mushoku Tensei: Si voy a otro mundo, me lo tomaré en serio

From Seven Seas:
An unemployed otaku has just reached the lowest point in his life. He wants nothing more than the ability to start over, but just as he thinks it may be possible. He gets hit by a truck and dies! Shockingly, he finds himself reborn into an infant’s body in a strange new world of swords and magic. His identity now is Rudeus Greyrat, yet he still retains the memories of his previous life. Reborn into a new family, Rudeus makes use of his past experiences to forge ahead in this fantasy world as a true prodigy, gifted with maturity beyond his years and a natural-born talent for magic. With swords instead of chopsticks, and spell books instead of the internet, can Rudeus redeem himself in this wondrous yet dangerous land?

Note: The manga skips the Depressed Magician arc from LN Vol 7 and the Mad Dog Eris chapters from LN Vol 9-10. Both are expanded into their own manga, with story material contributed by author Rifujin na Magonote.