Is there any meaning to the rail lines in Bakemonogatari's "Tsubasa Cat" OP?

Question

The (NSFW, be warned) broadcast opening for the Tsubasa Cat arc of Bakemonogatari ("Sugar Sweet Nightmare") features various artistic nudes with what appear to be rail tracks stretching out along the model's body, such as in this SFW sample:

The 'stations' here actually appear to correspond to various stations mostly in the Kansai area; for instance, 天見 (Amami Station) is a station on the Koya Line in Osaka, and 川西 (Kawanishi) is a small city in the same broad area. On the other hand, a bit of digging doesn't turn up any rail lines that run between the two.

Does anyone know if there's any meaning to the specific choice of rail stations used in this opening and their layout, or was it essentially just a mishmash of random location names?

Answer 1

Legs

大正－（新今宮）　　　　　　　平野－八尾－志紀－－▽－－尺土－浮孔－坊城－飛鳥－吉野口－緞野／吉野
　　　　　　　　＞（道王寺）＜　　　　　　　　　道明寺
　　　　（？池）　　　　　　　布忍－－－高鷲－－－△－－貴志－川西－天見－橋本－極樂橋
　　  　　１　　　　　Ｘ　　　　　　２　　　　　　Ｙ　　　　　　　　　　　　　３
（　）= Full name not shown on the scene

These are railway lines in Osaka:

• The 1st upper-leg is Osaka Loop Line: Taisho, Shin-Imamiya
• The 1st lower-leg is [? Line]: [? Station]
• The 1st interchange (X) is Tennoji (accessible directly from Osaka Loop Line, Yamatoji Line)
• The 2nd upper-leg is Yamatoji Line: Hirano, Yao, Shiki
• The 2nd lower-leg is Minami Osaka Line (from Tennoji, transfer to Osaka Abenobashi in walkable distance): Nunose, Takawashi
• The 2nd interchange (Y) is Domyoji (accesible from Yamatoji Line by transfering at Kashiwara to Domyoji Line, directly accessible from Minami Osaka Line)
• The 3rd upper-leg is Minami Osaka Line - Yoshino Line (transfer at Kashiharajingu-mae): Shakudo, Ukiana, Bojo | Asuka, Yoshinoguchi, Yoshino
• The 3rd lower-leg is Nagano Line (from Minami Osaka Line, transfer at Furuichi) - Koya Line (transfer at Kawachinagano): Kishi¹, Kawanishi | Amami, Hashimoto, Gokurakubashi*

¹ Uses kanji for Kishi Station in Wakayama instead.
* Uses traditional kanji

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Hands

（百合ヶ丘）　　　　南多魔－西府－立川－奥多魔
   　　    ＞登戸＜
　　　　　　　　　　狛江－喜多見－經堂－豪徳寺－下北澤
　　　１　　　Ｘ　　　　　　　　　　２
（　）= Full name not shown on the scene

These are railway lines in Kanagawa-Tokyo:

• The 1st upper-leg is Odakyu Odawara Line: Yurigaoka
• The interchange (X) is: Noborito (accessible directly from Odakyu Odawara Line, Nambu Line)
• The 2nd upper-leg is Nambu Line - Ome Line: Minami-Tama, Nishifu, Tachikawa | Okutama
• The 2nd lower-leg is Odakyu Odawara Line: Komae, Kitami, Kyodo, Gotokuji, Shimo-Kitazawa

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Body

　　　　　　　　　　高田馬場－池袋－巣鴨－上野－秋葉原－神田－＼
　　　　　　　　　／　　　　　　　　　　　　　　　　　　　　　　＼　　　　浅草－－－－▽－－－北千住－八潮－
三鷹－吉祥寺－新宿－－代々木－－千駄ヶ谷－－飯田橋－－御茶ノ水－－濱離宮＜　　　　　東京ガス
　　　　　　　　　＼　　　　　　　　　　　　　　　　　　　　　　／　　　　新日本橋－－△－－－錦絲町－新小岩－西船橋－東京タワー－津田沼－
　　　　　　　　　　澁谷－恵比壽－水道局－五反田－品川－有樂町／
　　　　　　　　　　　　　　　　　　｜
　　　　　　　　　　　　　　　　　不動前　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　芝公園
　　　１　　　Ｘ　　　　　　　　　　２　　　　　　　　　　　　　　　Ｙ　　　　　　　　３　　　　　　　　　　　　　　　　　Ｚ

These are railway lines in Tokyo:

• The 1st leg is Chuo Main Line: Mitaka, Kichioji
• The 1st interchange (X) is: Shinjuku
• The 2nd upper-leg is Yamanote Line: Takadanobaba, Ikebukuro, Sugamo, Ueno, Akihabara, Kanda
• The 2nd middle-leg is Chuo-Sobu Line: Yoyogi, Sendagaya, Iidabashi, Ochanomizu
• The 2nd lower-leg is Yamanote Line: Shibuya*, Ebisu, Waterworks bureau^x,2, Gotanda, Shinagawa, Yurakucho*
• The vertical-leg (2) is Tokyo Meguro Line (transfer at Meguro): Waterworks bureau^x,2, Fudomae
• The 2nd interchange (Y) is: Hamarikyu Gardens^x,3
• The 3rd interchange (3) is: Tokyo Gas^x,4
• The 3rd upper-leg is Tobu Skytree Line: Asakusa, Kita-Senju, Yashio
• The 3rd lower-leg is Sobu Line (Rapid) (from Tokyo) - Chuo-Sobu Line : Shin-Nihombashi, Kinshicho*, Shin-Koiwa | Nishi-Funabashi, Tokyo Tower^x,5, Tsudanuma
• The Z point is: Shiba Park^x

^x Not a station
² Represents Meguro on Yamanote Line. Between Ebisu and Gotanda, there's a waterworks bureau in Meguro
³ Represents Tokyo on Yamanote Line (accessible from Ochanomizu by transfering to Chuo Line)
⁴ Represents Higashi-Mukojima on Tobu Skytree Line and Ryogoku on Chuo-Sobu Line. Both have Tokyo Gas near them.
⁵ Tokyo Tower is not anywhere near the Chuo-Sobu Line
* Uses traditional kanji

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Conclusion

The railway lines are real, though they don't seem to mean anything. However, the bolded places on the body seem to mean something:

• Waterworks bureau near bladder
• Hamarikyu Gardens near womb
• Tokyo Gas near large intestine
• Tokyo Tower & Shiba Park are... recreation places

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Reference: a more SFW, redrawn OP by NEXIS on YouTube