The Ramen Sensei 2 is a free game by Kairosoft. It is basically the same as The Ramen Sensei (1), but in a freemium model. A lot of extra content was also added, and now has a New Game+ feature.
Language packs are community made translations of a specific game into a language not otherwise supported by Kairosoft. If you wish to create one, you can download the english CSV file here. See the language packs page for details.