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A person rapidly becomes older.

A participant rapidly becoming younger. Instantaneous changes do not qualify.

The buttocks growing for any reason. Likely to invoke big ass .

Testicles growing in size. May lead to big balls .

Switching bodies with another participant.

Any significant increase in the size of breasts. Very likely to invoke big breasts and possibly huge breasts .

Any significant decrease in the size of breasts. May invoke small breasts .

Growth of the clitoris, often results in a big clit .

Corrupting a participant's mind forcefully with magic or other supernatural powers, robbing them of their purity.

A male has his lifestyle modified into that of a crossdresser (e.g. via training or mind control ) or has his body altered into that of a shemale / futanari . In either case the person must act or be treated as more feminine.

Growing taller. May lead to giantess or giant .

Removing a person's moral standing towards sex. Must be done without the use of strong substances or supernatural influence. May invoke mind break .

Muscles appearing where they weren't before or existing ones becoming enlarged.

Nipples growing significantly in size. May lead to big nipples .

Abnormal growth of a penis. May result in a big penis .

Any significant decrease in the size of the penis. May invoke small penis .

A participant has their soul transferred into an item (e.g. jelly, onahole, or semen) and then excreted out, leaving their body an empty shell.

Becoming a statue/rock-like formation.

A participant becoming smaller. May lead to minigirl or miniguy . Does not necessitate transformation .

A sequence showing a physical, biological change of some kind.

Getting fatter via ingesting sustenance. Very likely to invoke bbw or bbm .