Tattoo is considered that you are a part of gang organization (or Yakuza) in Japan. There for many establishments (mainly public baths, sauna and Onsen) prohibits people with tattoo from entering. It includes one point tattoo like a little butterfly and flower and even a name except for medical reasons.
If you have one point tattoo, we suggest you buy a sticker to cover your tattoo. You can question like if your culture encourage people to have tattoo, in case of like Polynesian Tattoo. I am sure there will be a lot of talk about this issue as Japan is getting ready for 2020 Tokyo Olympics.
Since 1996, Japanese-Online has been provided as a free service from PSPinc with the purpose of providing resources to individuals interested in learning about the Japanese Language and culture.
Japanese-Online has content suited to varying levels of study, including lessons for beginners as well as lessons tailored for those who need grammar and writing resources. Lessons are best suited to those who have basic understanding of hiragana and katakana alphabets before moving on to the more advanced grammar and particle lessons. Grammar lessons focus on learning about writing and creating more complex sentences and most lessons will not use romaji (Japanese sounds written with roman letters). Kanji is used in the lessons with hiragana and English translations provided.