What's the best Anime watching app available for android currently ?

Honestly its not a bad option. I did something very similar for a while with Termux, Termux-X11, mpv and xdcc-dl. Basically all I'd need is the pack # from subsplease (xdcc) and it'd run a script that launched the video player. Worked well and you don't need to fiddle with shitty "1080p" streaming apps or VPNs