MaterialAs Tomorrow Became Yesterday
As Tomorrow Became Yesterday is a 5★ material in Honkai: Star Rail — see how to get it, its use, and related items right below on this page.
As Tomorrow Became Yesterday is a material ★5 in Honkai: Star Rail. This item is not currently used to level up any character or Light Cone.
Last updated: 30/07/2026
The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.
Description
Letter in Memory
Lore
Trailblazer: Hey, I miss you. Maybe this feels a bit out of the blue, but I just wanna take a look back one last time. The journey of Trailblaze must be filled with unknowns. So, I thought... why not leave you one more surprise? A ripple of memories, along with a touch of fairy magic. Before we knew it, we've shared such a long walk together. I wonder what story you'll write at the next stop on your journey. I will be in your memories, longing... Whenever I close my eyes, I can see yours, carrying the whole universe... Like waves of wheat rustling in the breeze, or the tomorrow where stars shine ♪ Cyrene
Stats
| Rarity | ★★★★★ |
| Type | Material |
| Stack limit | 99,999 |
Official names in every language
| Tiếng Việt | Ngày Mai Trở Thành Hôm Qua |
| English | As Tomorrow Became Yesterday |
| 日本語 | 明日は昨日に |
| 한국어 | 어제의 내일이 되어 |
| 繁體中文 | 成為昨日的明天 |
| 简体中文 | 成为昨日的明天 |
Where to use it / Related tools
As Tomorrow Became Yesterday is an upgrade material — check the Material Planner to see how much you need for the character you're building.
Same-type items
FAQ
What is As Tomorrow Became Yesterday?
Letter in Memory
Where do you get As Tomorrow Became Yesterday?
Official drop/source data for As Tomorrow Became Yesterday isn't published yet — check back after the next data sync.
What type of item is As Tomorrow Became Yesterday?
As Tomorrow Became Yesterday is a 5★ material in Honkai: Star Rail, in the “Material” category.
What is As Tomorrow Became Yesterday used for?
As Tomorrow Became Yesterday currently isn't listed as required by any character ascension, Light Cone ascension, or crafting recipe in official data.