Mottomo Kirawareteiru Saikyou no Akuyaku ni Tensei

Arima Seto is a 23-year-old freelancer. One day, he was reincarnated as Lobelia Crowley, the most evil villain of a popular smartphone game. He tries to accumulate good deeds to avoid the doomed end, but his venomous tone of voice won't stop--!

(Source: Kadokawa, translated)

Note: Includes one extra chapter.