Genjintch Tamagotchi Mesutchi and Osutchi Mori de Hakken! Tamagotch
This article is about a Japanese Tamagotchi release.

The Mesutchi (メスっち) and Osutchi (オスっち) (Mesu meaning girl, and Osu meaning boy) are a collective Tamagotchi released December 1997. The Mesutchi and Osutchi are the first Tamagotchi releases that introduced the concept of breeding and, unlike other Tamagotchi pets at the time, has a total of 10 icons.

Shell Design

The Mesutchi and Osutchi is larger than the original Tamagotchi pets. They are the same size as modern Tamagotchi virtual pets. The top features a removable cap, and inside held two small, square conductors. This is used to attach the two toys together.

Their screens are 18x30 pixels, taller than the screens of other vintage releases but narrower.

Ten designs were released, as well as a special collector's edition to celebrate the first anniversary of Tamagotchi. The sets are: blue and pink, clear smoke and clear black, white with orange and white with green, clear orange and clear green, and yellow with pink and white with blue. The collector's edition set is also blue and pink, but shinier and with different patterns.

The Mesutchi and Osutchi were sold separately from each other, with the exception of the anniversary editions, which had a pair bundled together with a Tamagotchi tutorial VHS.

Main article: Mesutchi and Osutchi/Shell list

Test Version

In August 1997, market test versions of the toy saw a limited release in Japan. They only came in the blue and pink shell design. It was identical to the final version, save for a few animation differences:

  • TMP was instead called "Kenami" (けなみ), a colloquial term for "lineage".
  • When disciplining the pet, a hammer would appear hitting its head.
  • When giving medicine, a syringe would appear.
  • When breeding, Ojitchi and Otokitchi would appear and provide a futon to the pet. On the final version, they were both removed, and instead of showing a futon, it showed the character next to the word "OK".
  • The back of the packaging shows Bunbuntchi and Bunkotchi in their futons.


The Mesutchi and Osutchi includes all of the normal Tamagotchi functions, though it introduces several new ones.


The game on the Mesutchi and Osutchi is called "Flag". The Tamagotchi will hold up two flags: a white flag on their left, and a black flag on their right. The user must press the corresponding button (A for white, B for black) when the Tamagotchi holds up the flag. There are five turns, and getting at least three out of five correct is considered a win.


Main article: Tamagotchi Power

The TMP (TaMagotchi Power) Icon is located as the 8th icon, and appears as a smiling face wearing a crown. It tells which TMP rank the character is in and what generation it has grown to. When two characters of the same TMP breed, the resulting babies will be of the next TMP. If two characters of different TMP breed, the babies will have the TMP of the parent with the lowest TMP.


The Breeding Icon is the ninth icon. When the Mesutchi and Osutchi become adults, players can interlock the two pets, then make them breed and have babies. There are two adult characters on each that are incapable of this: one is the neglect adult (Sutebotchi and Tsuketchi), and the other is the senior (Ojitchi and Otokitchi). Unlike modern pets where the gender can vary between generations, characters on the Osutchi will always be male, and on the Mesutchi always female.

Attention and Discipline

When the Mesutchi and Osutchi call for attention, they do a special animation where they stand in the center of the screen, facing the user. A harsher, louder sound plays if the pet is calling for discipline, and a unique animation plays if successfully disciplined.


The type of food the Mesutchi and Osutchi eats changes for each TMP, and when raising the special characters. The change is only cosmetic.

Group Meal Meal Name Snack Snack Name
TMP1 Rice sprite mesuosu Rice
Candy sprite mesuosu Candy
TMP2 Cannedfood sprite Canned Food
Cupcake sprite mesuosu Cupcake
TMP3 Onigiri sprite mesuosu Onigiri
Dango sprite mesuosu Dango
TMP4 Bread sprite p1 Bread
Shortcake sprite p2 Shortcake
Ojitchi & Otokitchi Mushroom sprite mesuosu Mushroom
Sake sprite mesuosu Saké
Sutebotchi & Tsuketchi Cupcake sprite mesuosu Cupcake
Sake sprite mesuosu Saké
Community content is available under CC-BY-SA unless otherwise noted.