My ultimate goal is to translate the following sentence one by one:

> 
> ユリアン\*\*の優しさに乗っちゃおう的な
> 
> 
> 

What I know is that ちゃう/じゃう is the informal form of しまう. As far as I know, I can express two things with しまう:

1. Do something completely and finish it: 例: 本を読んでしまいました。
2. Do something by accident: 例: 花瓶を割ってしまった。

Again I can conjugate ちゃう/じゃう as usual. So ちゃおう/じゃおう is like しょう. (Let's...)
So in my opinion I could translate 本を読んじゃおう with "Let's read this book completely.", but the 2nd case does not really work, isn't it?

**My quesions:**

1. Is the stuff above correct?
2. What does the 的な at the end of 乗っちゃおう do? How do you translate it? As far as I know I can use 的 to change a noun to an adjective (個人 -> 個人的), but thats it.
3. 優しさ is the noun of 優しい. I have never seen 優しさ乗る bevor and my dictionary does not know it as well. What is this? Do similar things exist? For example 長さ乗る?
4. What is the translation of the sentence from above and how does it change, if I would say ユリアンの優しさに乗っちゃおう or ユリアンの優しさに乗っちゃう的な.

**Thanks a lot!** 
I am sorry for this many questions in one question but I don't really know how I could split this up...

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\*\* my name