Pet Janken is a rock-paper-scissors (じゃんけん) challenge you play with friends through your pets. Send a challenge over LINE, watch the pets face off in a live reveal, and win Lucky Items. Lose a round? Challenge back with one tap.

Tap Challenge a Friend to start. Your pet will reveal its move — Rock ✊, Paper ✋, or Scissors ✂️ — then you pick friends from your LINE contacts to send the challenge to. Your friends receive a LINE message showing your pet holding a closed fist. You can challenge as many friends as you like, as often as you like — there's no limit on sending.

Tap a challenge message in LINE to open the game. You'll see your friend's pet with a closed fist, ready to face yours. One thing first: your pet needs to be feeling good to play. If your pet isn't up for Janken, you'll see a care prompt — cheer them up right there, and the challenge continues as soon as they're feeling better. Challenges stay open for 24 hours; after that they expire for both players.

Both pets line up, a 3-2-1 countdown plays, and both fists open at once. Standard Janken rules decide the winner: Rock beats Scissors, Scissors beats Paper, Paper beats Rock. The winner's pet celebrates, the loser's pet puts on its saddest face, and on a draw both pets tilt their heads in confusion — followed by an instant rematch prompt to settle it.

Win a round and you'll receive a Lucky Item — a random reward such as boosters or B Points. A few limits to know:

Once you've hit the cap, you can keep playing Janken for fun and bragging rights — your daily win counter keeps score.

When your friend plays your challenge, you'll get a notification with the outcome. Tap it to see both pets and their moves, then hit Challenge Back! to send a new challenge to the same friend with one tap.