Keyboard Immortal - Chapter 2123: Playing With Fire

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

After the gold medal teacher, Sun Mo of the city’s No. 2 Middle School, fell into the water, he transmigrated to Tang Guo, Zhongzhou Academy and became a newly graduated intern teacher. Sun Mo bound the Peerless Master System, turning waste into little geniuses. Under Sun Mo’s guidance, the little children became masters after one year, passed emperor level after three years, and attempted god level after five years.

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

- Description from Novelupdates