I still remember the sting of finishing Chapter 1 in Trails from Zero with only 28 DP on my first SSS run. I had cleared every visible terminal quest, beaten the Mainz Mountain Path boss, and felt good about my rookie Crossbell police work. Then I found out two hidden quests never appear on the mission terminal, and Back Alley Doctor Glenn Vol. 1 vanishes after Day 1. No do-overs. If you miss those unmarked steps, you are permanently locked out of the late game's strongest ultimate weapon materials. That is not a small loss. It is a run-defining mistake.

As of the v1.5.7 September 2026 patch, these Chapter 1 DP windows and values are confirmed stable across PC, PS5, and Switch 2. I have tested the route on PC and Switch 2, and the triggers have not moved. The chapter cap is 49 DP, and every point matters if you want the best rewards later.

Chapter 1 DP Breakdown: What You're Actually Chasing

The hidden quests do not appear on the SSS terminal at any point. They can only be triggered by talking to specific NPCs within narrow windows. Oscar is at Morges Bakery on Day 2. Bond is on West Street on Day 3. I have seen players miss both because they trusted the terminal and never revisited old NPCs. I do not make that mistake anymore.

Hidden Quests Guide: The Baker's Dilemma and A Letter to a Certain Person

The two hidden quests are the ones that catch almost everyone. The Baker's Dilemma awards 5 DP and 1000 Mira. I could only trigger it by speaking to Oscar at Morges Bakery on Day 2. No terminal notification appears before or after this 24-hour in-game window. A Letter to a Certain Person also awards 5 DP and 1000 Mira. It requires speaking to Bond on West Street on Day 3. This is the same Bond who gives you Back Alley Doctor Glenn Vol. 1 on Day 1, which makes him a two-visit priority NPC. In my optimal community-recommended SSS patrol loop, I visit Bond on Day 1 first to grab the book, complete all visible terminal quests, then return to Oscar on Day 2 and Bond again on Day 3 to secure both hidden quests. Do not skip the bakery. Do not assume Bond is finished after Day 1.

Investigation Choices and Boss DP: Get Over The Barrier Efficiently

At the end-of-investigation SSS Building strategy meeting, I select three correct answers for +1 DP each: 'The time of the attacks', 'The wolves' physical description', and 'A specific type of wolf'. That is 3 DP from this sequence. For the Mainz Mountain Path boss battle, I do not let any NPC or guest character fall in combat. That secures the +2 DP bonus. This is where the community's 'Get Over The Barrier' rallying cry applies. Stock up on healing items. Prioritize focus fire on high-damage enemies. The Dino-Gator on West Crossbell Highway is not a Chapter 1 DP source, so I skip it for now unless I am grinding for the Monster Guide entry. I learned that the hard way when I wasted an hour on a fight that gave me no DP.

Missable Collectibles: Books, Recipes, and the Fish-o-matic

Back Alley Doctor Glenn Vol. 1 is a critical missable. I talk to Bond on the West Street bench on Day 1 without fail. There is no way to retrieve it later. Vol. 2 of the series requires talking to Sezer at the back of the Mainz tavern before completing the mining village investigation. Three recipes are available this chapter. Sweet Sandwich comes from the library bookshelf. Fresh Vegetable Juice comes from Vino at the Central Square juice stand. Savory Carbonara comes from the St. Ursula Medical College cafeteria wall poster. I also grab the Novice Rod from Peter on East Crossbell Highway early. Then I catch the chapter-exclusive Snow Crab at Armorica Village to avoid locking myself out of 100% fishing completion later. These small pickups look optional. They are not. They feed into long-term completion, and I treat them as mandatory.

Where to Buy and Further Resources in 2026

Trails from Zero is priced at $39.99 USD across Steam, GOG, and Epic Games Store as of October 2026. The Crossbell Bundle including Trails to Azure is $109.99 on PS5 and Switch 2. Before purchasing, I always check current storefront prices, because sales rotate often. Newcomers who want to understand where the Crossbell Arc fits in the broader Kiseki timeline can start with general series lore resources. For ongoing community-verified DP calculations and up-to-date guide data, I rely on community guides and official publisher updates. But for Chapter 1, the core rule is simple: hit Bond on Day 1, Oscar on Day 2, Bond again on Day 3, choose the right investigation answers, and keep every guest alive at Mainz Mountain Path. That is how I push toward 49 DP and avoid a permanent lockout.