Part Three: Summary of Chapter 1 - Chapter 170

Based on the passage, the key points are:

- Luo Feng and his group arrived at the Sky Island and met the "God" Enel. Enel was arrogant and looked down on them.

- Klockdar fought against Enel but struggled to hurt him due to Enel's Logia devil fruit ability allowing him to turn into electricity.

- Enel got angry after being teased by Klockdar and transformed into a giant lightning god Thor form with his 200 Million Volt power.

- Enel's fruit ability development was very good, allowing him to give even someone as strong as Klockdar trouble.

- Luo Feng and his group remained calm, with Bartolomeo's barrier protecting them. Luo Feng knew Enel's abilities well and was not worried.

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Regarding the relationship of the main character in this part:

- Robin - She is described as Luo Feng's "first woman", implying some kind of intimate relationship. The passage states Luo Feng "must handle this black-skinned girl well", further suggesting intimacy.

- Nami - The passage describes Luo Feng "teasing" her, but does not explicitly state they have an intimate relationship in this part.

- Nujiko - A "sexy chef lady" who Luo Feng provokes and causes to blush, but no direct mention of intimacy.

- Vivi - This part does not provide any evidence of an intimate relationship with Luo Feng.