I think the "male:gender bender" tag should be removed. Because the protagonist(天坂裕二) didn't transform into any female human or female animal. Transforming into non-living things, such as pants or tables or chairs, should not be considered as "gender bender" since they have no biological gender at all.
FINALLY!!! I spend YEARS looking for this one. Commented before even reading so don't know if it will be any good but five stars and thank you for the upload...