The plot revolves around a character's first anal penetration despite initial reservations. The narrative focuses on preparation rituals, the physical sensation of the character's anus being stretched and subsequent initial penetration, anxiety and discomfort slowly transforming into pleasure, and subsequent eagerness for repetition. The initial reservations can be due to inexperience, embarrassment, shame, vulnerability, and awkwardness. There should be carefully preparation before penetration occurs such as the use of enemas and then lube. A single finger should be used initially with the fingertip lightly probing before slipping past the tight ring of muscles and rubbing lube inside the character's ass. The character being peneteated may have to push their anal muscles outward to open up their back passage in order to be penetrated. This can be a point of note as the character may not push out their muscles and experience increased discomfort as the finger is forced past the ring of muscles. The character being penetrated will feel a significantly increased burning sensation and a dull ache in their ass. Their anus will spasm and contract around the invasion before the rectal muscles expell the finger. This can cause embarrassment and shame, before their partner reassures them and they try inserting a finger again. Once the finger has been inserted and the lube spread around the inside of the ass, the finger is then removed, lube reapplied and then carefully inserted back into the ass and pressed slightly deeper. The process repeats until the finger is fully buried passed the second knuckle. The process then begins again with another finger. Then the two fingers are slowly used together to stretch the tight opening of the anus in preparation for fucking.