With Winter Frost’s release, numerous events have borne fruit, most of which are triggered through NPC interactions. The Onsen Egg Promise is one such event, brought about by initiating dialogue with Naughty. Soon enough, players are taken from a series of dialogues to beginning a full-fledged egg hunt to aid Naughty in preparing his “winter gift.”
Every Onsen Egg Hunt Location in Heartopia
With 16 eggs in total, players have to take a snapshot of each from their in-game camera to complete the challenge in Heartopia. Luckily, you can find all of them within the Olsen Mountain region. Here’s how.
Day 1: Beige Cracked Egg

The first egg exists behind Naughty, attached to one of the fences near the Onsen Mountain Lake.
Day 2: White Cracked Egg

The White Cracked Egg is present in the new ice-skating rink region, above the moose-resembling ice sculpture present on the right-hand side of the entrance stairs.
Day 3: Green Cracked Egg

The Green Cracked Egg exists underneath the wooden staircase adjacent to the Igloo’s entrance, near Azure’s stall.
Day 4: Cyan Cracked Egg

The Cyan Cracked Egg is present behind Blanc’s Flower Stall in front of the Igloo’s entrance.
Day 5: Lavender Cracked Egg

The Lavender Cracked Egg rests on the awning of Massimo’s Kitchen Stall, towards the left-hand side of the ice rink’s entrance.
Day 6: Azure Cracked Egg

The Azure Cracked Egg can be found on the railings present behind the snowman once you move up the wooden stairs located beside the Igloo.
Day 7: Black Cracked Egg

Enter the Igloo beside Blanc’s Flower Stall to find the Black Cracked Egg resting on the right-hand side table.
Day 8: Red Cracked Egg

The Red Cracked Egg rests above the surrounding coffee umbrella, present on the back side of the Igloo near the glowing portal.
Day 9: Orange Cracked Egg

The Orange Cracked Egg can be found atop the rock formations present adjacent to the coffee umbrella discussed in Day 8.
Day 10: Yellow Cracked Egg

Inspect Blanc’s Flower Stall to locate the Yellow Cracked Egg.
Day 11: Emerald Cracked Egg

The Emerald Cracked Egg exists between the two adjacent trees opposite Massimo’s Kitchen Stall.
Day 12: Aquamarine Cracked Egg

The Aquamarine Cracked Egg rests behind the bush opposite the stairs leading up to the skating ice rink, near the large pine tree.
Day 13: Blue Cracked Egg

Head over to the lakeside towards Vaniya’s Fishing Spot from the Onsen Mountain Lake’s pier. There, you’ll find the Blue Cracked Egg atop the stall present beside the coffee umbrella.
Day 14: Purple Cracked Egg

The Purple Cracked Egg is atop Massimo’s Kitchen Stall on the awning, where the Lavender Cracked Egg was found. To take a snapshot easily, move up the ice rink’s stairs towards the awning.
Day 15: Rosy Cracked Egg

Move up the stairs leading to the skating ice rink to find the Rosy Cracked Egg resting atop one of the ice cones slightly towards the right-hand side.
Day 16: Cracked Onsen Egg

Present where the Orange Cracked Egg was found, move behind the Igloo’s entrance to find the final egg sitting atop one of the rock formations beneath the boardwalk.
