Comments of chapter undefined of Two Different Majors Reincarnated as Siblings in Another World

The book is good but there are a couple of issues with the writing. Firstly, it is very hard to tell when who is speaking. I suggest making it more explicit in the chapter who's POV we as viewers are looking at. Secondly, not really an issue anymore but you need to make it really clear who is Arsenio and who is Ernesto. Because I had to go several chapters trying to figure out who is who. Arsenio=Bagas and Ernesto=Yukio??? I don't remember the name