I went to the amusement part with my co-workers that they are my bosses of my office, on July 31st.

The name of place where we went to was Nagashima Spaland.

Probably, you've ever You've probably heard of this place before, because it is so famous for enjoying something oneself on during holidays.

Of course, you know, July is the time when Japanese enjoy themselves by going to the sea or enjoying having a BBQ with friends, or watching lots of fireworks by the river.

Anyway, We hit the amusement park anyway on the last day in July.

I told you expression which the emotion that I felt on the day earlier, It I was so excited.

Actually, I am not a big fan of going to the amusement parks, even Universal Studio.

But my bosses having had me joined to their team, I mean they invited me to their team. 

This "I mean..."  is something that we never write. We use it to make a correction or clarification in spoken speech only. For written language you can just erase and fix it, so there is no reason to write "I mean..." here.

I feel like it was felt so happy then because it was the certain evidence which showed that they recognized me as one of their friends, not also just as one of their co-workers.

JUST A DIARY ENTRY ON Aug.8th

Of course, you know, July is the a time when Japanese people enjoy something many things, like going to the sea, enjoying having a BBQ with friends and watching lots fireworks by the river, so we hit the amusement park anyway on the last day in July. I told you expression which I felt on the day earlier, It was so excited The day before I was so excited.

Actually, I am not a big fan of going to the amusement parks, even Universal Studios. But, because my bosses having me joined to their team, I mean they invited me to join them on their team, I was so happy. I felt like it was so happy then because it was the certain evidence which that they recognized me as one of their friends, not also just one of their coworkers.