Source: https://www.pixiv.net/user/11933932/series/90305

Artist's name means "part-time combatant/fighter", probably referring to the faceless goons that are common in the transforming heroine genre.

Main story: https://e-hentai.org/g/1793407/844f7499fc/

IF 1: 0001-0024
IF 2: 0025-0081
IF 3: 0082-0127
IF 4: 0128-0272
IF 5: 0273-0407
IF 6: 0408-0418
IF 7: 0419-0429
IF 8: 0430-0491

IF 8 is difficult to understand without context provided by the artist commentary on pixiv. To summarize, Shine Mirage is captured and assaulted by tentacles while her senses are forcibly linked to Shine Mirages in parallel worlds (also defeated and tentacle-raped).

The alternate forms were inspired by the servant classes from the Fate series.

Update #1: added IF 5
Update #2: added IF 6 & 7
Update #3: added IF 8

nice work man

Base +6

怎么是日本世博会的标啊哈哈哈哈哈

Base +6