The World-Hopper's Beast Wives

If you like drama stories you can follow one-handed, The World-Hopper's Beast Wives is built exactly for that: a 9:16 series designed for mobile. It runs 33 episodes of roughly one to two minutes each — about 50 min in total, easy to finish over a few commutes. The plot, in short:

Crushed by loan sharks, Leo awakens the Dimensional Portal System and crosses into the beast world. With supplies from Earth, he wins over Janna of the Rabbit Clan and Selena of the Silver Wolf Clan, crushes the gangsters back on Earth, and becomes the ruler of both worlds.