I mised a few points so here we go.

It's clear that the MC and the team are... unhinged, to say the least.

On the 1st and 6Th entry, the writer, Api, introduces himself twice.

#1: Hello. Can you hear me?

#6: Hello.

Keep in mind that this is the same person writing these entries. So why introduce himself twice?

Going to the next few chapters, Api mentioned that his team took care of a villain.

There's something very wrong here. The entries went from how he felt to events that were occurring. In entry #10, it's said to be ten years. By that logic, we can see the main character struggling for a long time, each entry written once a year.

Let's not forget that Tanah doesn't recognize Api.

Api describes Tanah as the same albeit a little older. They share the same calibre of powers, just different elementals. Tanah had also spent years with Api. So why didn't he recognize him?

They look exactly alike. You'd think Tanah would have the observation skills.

Because Api doesn't look the same anymore. He gave up on Tanah but he still loves him.

- altered appearance .
- odd, two-timed introductions.
- His entries focusing on events than feeling.

It's not just him either. Even "your best friend", Petir changes a lot. He's a workaholic now. Their behaviour changed drastically. Api is more passive and observing, focusing on events than emotions. Petir is altered to be hyper focused on the team's work.

So...

- personalities altered
- appearance changed
- their team's morals changed

Reverse.

Ever since Tanah left, there was no support beam, no lifeline for the others. Daun and Cahaya doesn't exist, so their only sense of right and wrong came from Tanah and Angin, but they both left to start a family.