Thanks for the tip. It seems that in the Japanese site they were using a library called WireExt which allows Arduino to cleverly take in 32 bytes or more of data.
This is the website which contains the WireExt library (which is also in Japanese):
http://fenrir.naruoka.org/archives/000773.html
Scrolling down to the end of the blog post, the author has placed the links to the WireExt.cpp, WireExt.h and keywords.txt.
It is not in the standard way to import self-made libraries.
I will be trying it out.
@knut_ny thanks for the reply
Latest updates: The WireExt library is for the Atmel chips and not for ARM chips.
Error encountered:
fatal error: avr/io.h: No such file or directory
After changing the above to Arduino.h another error occured:
fatal error: compat/twi.h: No such file or directory