Free, legal, no account required. Pluto TV has an on-demand section with BL movies and series dubbed or subbed in Spanish.
Aunque ver series y películas online gratis puede ser conveniente y económico, es importante tener en cuenta algunas precauciones: Free, legal, no account required
If you see a message saying "install extension to watch" or "download player for Spanish subs" – close the tab immediately. No legal platform asks you to install anything just to watch subtitled video. The only "install" you might need is: Free, legal, no account required
Many Thai and Japanese BL producers upload full episodes with multi-language subtitles, including Spanish. Free, legal, no account required