The Support Sensei initiative originally started in 2014, when Yamamori Mika stated how upset she was that readers outside Japan were reading her manga for free while others paid to read her work. She requested that international fans support her in any way they can, which, for everyone outside Japan, means buying the Japanese volumes of her manga.
Since then, Support Sensei has expanded to include works of other mangaka we’ve scanlated. Please note that all the books we link to are in Japanese, but you should still consider buying a volume or two even if you don’t understand the language. If you’ve got lots of money to spend, by all means, go wild. By doing so, not only do you show your support for your favorite mangaka, you also increase the chances of their works getting officially published in English.