The model I think is fairly self explanatory.

Full title of the Doujin is "[SSB (Maririn) Hotel Chokkeku Cosplay Event Toujitsu Honban Ishou de Chakui Hamedori Kaijou Magiva ni Nakadashi Kimete mo Kameko ni Kizukarenai Setsu (Blue Archive)"

The requestor also had to use chatgpt to translate the their request but the doujin was untranslated, so I'll include the non-romaji title here in an attempted theory that search results in stable diffusion and the site scan descriptions for relevancy when searching.

"「ホテル直結コスイベ当日本番衣装で着衣ハメ撮り 開場間際に中出しキメてもカメコに気づかれない説」"

https://vocaroo.com/1dCKgpymuk1M

Back to my devilish tricks.

Works well at a strength of 1

Previews made with [Malebolgia] The 8th Circle - 'Fraud - Ditch 1' Custom Illustrious Checkpoint