Zero Mech: Rise of the Janitor Ace

If you like revenge and fantasy stories you can follow one-handed, Zero Mech: Rise of the Janitor Ace is built exactly for that: a 9:16 series designed for mobile. Like most vertical dramas, it moves fast: short episodes, a cliffhanger at the end of each, and no filler. The plot, in short:

Bearing the infamy of being the son of a criminal, the low-level cleaner Zeke, who suffers humiliation at the elite armor base, unexpectedly pilots the first-generation pure mech that has been sealed for thirty years, using tsunami spiritual power to become a legend and thus embark on a comeback.