Reincarnated in Another World, My Magic Is All Random?

[Reincarnation + Slow Heat + Whole Life + Funny + Different World Continent + Two Dimensions + Sword and Magic] A middle-aged boy meets a masked monster at a comic exhibition, and ends up being reincarnated into a different world! ? After I was reborn, I discovered that both my parents were elves! ? I want to become a great magician, but the magic I learned will be randomly replaced! ? While studying magic, he was captured by his father to learn spearmanship, with the goal of becoming the world's best melee mage! I grew up to be an adventurer, but a stupid girl pestered me and held me responsible! ? By mistake, he embarks on a journey with the goal of living a peaceful life! What! ? You said the devil is going to revive! ? Ino, the great magician of [Rainbow]! To live a peaceful life! Use random magic on your enemies!