Today we got new event called “Mimi Tomo”. The story started when Katherine of Mondstadt give us mission to investigate recent intel about increasing appearance of Unusual Hilichurl.
During our investigation, Traveler and Paimon met Hilichurlian language expert Ella Musk. With help of Ella and her Handy Handbook of Hilichurlian, we can speak with some hilichurls and ask them about information regarding Unusual Hilichurl.
To convince them, we will need to do some mission. Varies from defeating certain enemies or giving them some items.
After helping the friendly hilichurls, we will get Unusual Hilichurl location and defeat them. After defeating them, we can claim our rewards: primogems, mora, exp book, and furnishing blueprints.

Here’s official information from hoyolab forum:
Requirement:
Adventure Rank Level 20 or Higher
Event Duration
Event Gameplay Period:2021-05-27 10:00:00 – 2021-06-06 03:59:59
“The Lost Hilichurl” Quest:2021-06-06 04:00:00 – 2021-06-08 03:59:59
Event Details:
- During the event, there are seven Sighting Locations to investigate. Once the event begins, one investigation location will be unlocked each day.
- With assistance from Hilichurlian expert Ella Musk, the Traveler is tasked with finding hilichurls that are open to communication and asking them for more information on the whereabouts of the Unusual Hilichurl.
- After completing requests for hilichurls, they will inform you of the time period during which the Unusual Hilichurl will be active, and also indicate the approximate location. Track down and defeat the Unusual Hilichurl at these times to obtain rewards.
- During the event, after a Traveler accepts the investigation quest in Co-Op Mode, only the host can carry out the quest.
- After the event gameplay period ends, Travelers who have completed the “Mimi Tomo” quest can accept “The Lost Hilichurl” quest at Katheryne’s location in Mondstadt. Complete the quest to claim the corresponding rewards.
- (Above times are all displayed according to your server time.)
Furnishing Blueprint Rewards
Day | Keyword/Item | Blueprint Reward |
1 | Mita movo lata = Meat (from the) water = Crab, Fish, Frog, Shrimp Meat | ![]() |
2 | Defeat strong enemy | ![]() |
3 | Celi Lata = Cold light source = Crystal Chunk, Crystal Core, Loach Pearl, Luminescent Spine, Magical Crystal Chunk, Small Lamp Grass | ![]() |
4 | Gusha Celi Boya = Red plant = Tomato, Jueyun Chili, Carrot, Flaming Flower Stamen, Snapdragon, Windwheel Aster, Silk Flower, Valberry | ![]() |
Lata Boya Sada = Blue solid = Magical Crystal Chunk, Crystal Chunk, Starsilver, Starconch, Loach Pearl, Noctilucous Jade | ||
5 | Kucha Gusha = Almond, Dandelion Seed, Pinecone, Rice, Wheat | ![]() |
6 | Upano = Up = Butterfly Wings, Crystal Core, Fowl, Luminescent Spine, Dandelion Seed | ![]() |
7 | Gusha Unu Boya = Yellow Plant = Berry | ![]() |