相關動圖：https://www.pixiv.net/artworks/110579701

　　这只是在履行锡兰小姐的要求。

　　起先几乎是以抗拒的态度进行，对于作为老资历的菁英干员居然得屈服于此，这种抛弃尊严的行为使得这个任务可能比任何锡兰给予的任务难度还要高。黑在博士面前第一次失格的痛哭流涕，并且在事后不断地干呕，舌尖上残存的味道令她那夜想起来依旧头皮发麻。当时泪眼的她对博士投以不解与愤怒的眼神，博士只是自顾自地满足于余韵，然后拉起拉链不屑一顾，仿佛所谓的「肛腔清洁」只不过是干员们一次简单的初级任务。

　　在那之后，每当听到锡兰小姐发下指令的语音，黑的心头总是一沉。不同的房间、不同的时间，然而进行的羞辱总是一样的。先以唾液湿润，再以舌头缓慢刮扫腔室一圈，前后的刺击着肛内，这些流程以被黑所熟悉。菲林的舌头，敏感而细致，对于温度与味道的品测是一绝，她可以感受到博士在腔深处与浅处温度的差别，也可以察觉到括约肌任何稍微颤抖的缩张。 「难道这是博士指定我的目的吗？」黑不愿意多想，只是皱起眉头闭上眼睛，祈祷加速喷发可以让流程早早结束。

　　她早早不再哭了，如今甚至连皱眉这样的抗拒表情也没了，当博士背对着她脱下裤子时，她会自觉地伸出舌头，口中也自然的分泌出唾液。当她在与锡兰休憩相聊时，发现舌头不自觉地将细管以色情地方式玩弄。当然，有些东西是不可能改变的，恶臭仍旧是恶臭，不管舌头抚慰过多少次博士的温暖肛腔也依旧如此。

她发现自己敏灵的耳多可以听出博士呼吸声和呻吟声的变化，进而知道了舌头攻击的哪处是敏感带，而当她的细舌逆流而上时，人体又会防卫性的紧缩肛门夹住她的舌头，但自要令舌尖轻微摇搔，防御很快就会破解，浓厚的精液也会在紧绷后喷射而出——她对自己的发现，不愿承认的，似乎有些得意。

她看着博士一如往常地垂着那欢淫后松弛的阳具，并找着落去哪的皮带和长裤——她突然想到，这么多个月来，她以把博士的肛腔所熟悉，对于肌理脉落与凹凸起伏学习殆尽，可以说是罗德岛上最资历的人了，然而，她却从未与博士性交媾，甚至是口交、接吻、牵手，言语仅仅止于工作上的交接。她舔了舔嘴角的残毛，思考着，这么一个熟悉的人，居然是这么不熟悉。

(translate assistant with AI)

This is just fulfilling Miss Ceylon's request.

At first, she resisted almost defiantly, finding it difficult to believe that a elite operator would submit to such an act that seemed to forsake dignity. This abandonment of pride made this mission possibly more challenging than any task Ceylon had ever assigned. Schwarz cried and sobbed for the first time in front of Doctor, and afterward, she couldn't stop dry heaving, the lingering taste on her tongue sending shivers down her spine that night. With tear-filled eyes, she looked at Doctor with incomprehension and anger, while the Doctor merely reveled in the afterglow, then zipped up dismissively, treating what he called "anal cleansing" as a simple, basic mission for operatives.

After that, every time she heard Miss Ceylon's voice giving orders, Schwarz's heart sank. Different rooms, different times, but the humiliation was always the same. First, moistening with saliva, then using her tongue to slowly sweep around the cavity, probing both the depths and the shallows of the rectum. These procedures became all too familiar to Schwarz. Felines tongue was sensitive and delicate, unmatched in its ability to detect temperature and flavor. She could sense the temperature difference between the Doctor's deeper and shallower regions and could even detect the slightest quiver of the sphincter. "Is this the purpose Doctor assigned to me?" Schwarz refused to dwell on it, only furrowing her brow and closing her eyes, praying that an accelerated climax would bring the process to an early end.

She stopped crying long ago and even the resistance expressed through a frown disappeared. When Doctor turned his back to her and remove his pants, she automatically extended her tongue, and her mouth naturally produced saliva. During casual conversations with Ceylon, she noticed her tongue involuntarily playing with the tube in a suggestive manner. Of course, some things were impossible to change, and the stench remained just as foul, no matter how many times her tongue caressed the Doctor's warm rectum.

She found her acute ears could distinguish the changes in the Doctor's breathing and moans, allowing her to identify the sensitive areas targeted by her tongue. When her delicate tongue moved upward, the body's defense mechanism tightened the anal muscles around her tongue. But a gentle flick of her tongue quickly broke down the resistance, and the thick semen would then ejaculate after the brief tension – she couldn't help but feel somewhat proud of her discovery.

She gazed at Doctor flaccid and satisfied cock, as usual,Doctor start to search for where his belt and pants. It suddenly occurred to her that, after so many months of becoming intimately familiar with the Doctor's rectum, she had studied every ridge, texture, and curve, making her arguably the most experienced person on Rhodes Island. Yet, she had never engaged in sexual intercourse, not even fellatio, kissing, holding hands – their interaction was solely work-related. She licked the remnants of hair from her mouth corner and pondered how someone so familiar could remain so unfamiliar.

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