Anime/H

Ha

 * Hackadoll the Animation - EP12: For a few seconds, one of the heroines becomes a giantess to defeat a villain very similar to Bison.
 * Hand Maid May: A geek is given a doll with artificial intelligence that is programmed to serve him. There are some scenes where this doll interacts with women (para-giantesses).

He

 * Hell Girl - SE3-EP14: Ai Enma, the infernal protagonist of the series, punishes a delinquent, making him "feel small" (interacts with 3 absolute giantesses). Finally, when he is taken to hell, the punished criminal is literally shrunk.

Hu

 * Hunter × Hunter: A shounen about 4 guys who want to be "hunter".

Hy

 * Hybrid × Heart Magias Academy Ataraxia - EP11: One of the heroines uses her maximum power, making her and her robot into a large feminine spectrum.
 * Hyperdimension Neptunia The Animation: There is a SW who is sitting on a flying book all the time. Because in this anime there are no males (typical of fanservices), the rest of women in the series take the role of para-giantess.