Mondaiji-tachi ga Isekai kara Kuru Sou desu yo?: Onsen Manyuuki

Normal foxes or mythlogy, yōkai foxes?
Demons or waifus?
Fluffy and dangerous❤️

A list of anime containing ecchi elements, but are not tagged as ecchi by MAL. While the ecchi content may not be as prevalent or extreme as officially-tagged ecchi titles, there is still enough to be of interest to fans of the ecchi genre. Many of these register at least 1.5/3 stars on AniDB's "tag-weighting" system for ecchi.
Conversely, those who don't care for ecchi may wish to use this stack for cautionary purposes, as these titles may contain things like pantyshots, revealing outfits, incestuous overtones, oversized/jiggling breasts, swimsuit/lingerie moments, extended bath/shower scenes, lewd dream/fantasy sequences, innuendo, or general fanservice in an otherwise serious/"respectable" show.
Only the first seasons of franchises are listed. Some titles may (eventually) have additional details explaining why I've placed them on the list.

Part 1: https://myanimelist.net/stacks/24838
Part 3: https://myanimelist.net/stacks/26747

In this stack you will find all isekai anime, including OVAs, ONAs, specials and movies.

How many have you seen? Have fun discovering your new favourites!

Part 1: myanimelist.net/stacks/32968
Part 3: myanimelist.net/stacks/32974
Part 4: myanimelist.net/stacks/32980
Part 5: myanimelist.net/stacks/32982
Part 6: myanimelist.net/stacks/32983
Part 7: myanimelist.net/stacks/32985
Reverse Isekai: myanimelist.net/stacks/32986