Viki is famous for subtitles done by fans, but it offers a solid free section. Look for the "Viki Free" category. You’ll find classics like "Hana Yori Dango" (Boys Over Flowers) with ads.
For mobile devices, you can download content for offline viewing through official apps: Google Play Movies & TV free mobile 3gp all japanese love stories videos
3GP (3rd Generation Partnership Project) was the standard video format for 3G mobile phones. Viki is famous for subtitles done by fans,
Pluto offers scheduled "live" channels, but their on-demand menu includes a rotating section of Japanese content. The romance category often features tearjerkers like "1 Litre of Tears." For mobile devices, you can download content for
Japanese platform Niconico and Chinese platform Bilibili host thousands of classic Japanese love stories. While the streams are in FLV or MP4, you can use online converters (like Convertio or AnyConv) to convert these videos to specifically for mobile storage.
The following sites offer Japanese content for free or low-cost mobile viewing: JFF+ Independent Cinema