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

The Tamagotchi Osutchi and Mesutchi (たまごっち オスっち・メスっち (Osu meaning boy, and Mesu meaning girl) are a collective Tamagotchi released December 1997. The Osutchi and Mesutchi 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.


The Osutchi and Mesutchi is larger than the original Tamagotchi pets, about the same size as the Tamagotchi Connection virtual pets. The top features a removable cap, and inside held two small, square conductors. This is used to attach the two toys together and initiate the marriage process. Their screens are 18x30 pixels, taller than the screens of other vintage releases but narrower.

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

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


The game on the Osutchi and Mesutchi 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.



Tamagotchi Power explanation

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 Osutchi and Mesutchi wake up for the first time after becoming 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.

The parents will feed the babies whenever they themselves get fed, but it will be up to the player to clean their poop and cure their illnesses. While the parents are around, the babies will get sick 2-3 times a day. After at least two full days have elapsed, the parents will disappear shortly after midnight and the next generation will properly begin.

Attention and Discipline

When the Osutchi and Mesutchi 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. In addition, the Osutchi and Mesutchi are more lenient with discipline than other vintage releases in that they will make enough calls in a stage to allow the discipline bar to be filled even if several calls are missed. Certain Tamagotchi will continue to call for discipline even after their bar has been filled, and a Tamagotchi may sometimes start sulking if a discipline call has been missed.


A Tamagotchi may begin to sulk if a call for hunger, happiness or discipline is missed. In this state, it will refuse to eat meals but can be brought out of it if it is fed a snack or a game is won - however happiness will not rise when doing so.


The type of food the Osutchi and Mesutchi 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


  • This is the first official Tamagotchi release to feature ten icons and breeding, which would both become standards from the Tamagotchi Connection Version 1 onward.
  • At 31 characters each and 49 in total across the two versions, the Osutchi and Mesutchi have the largest rosters of any vintage release.
  • Pressing a button during certain events such as the game results screen, evolution or the death sequence will cancel all sound until it ends.


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