The Kosuzu Motoori Case Files Event Guide (Lite ver.)

The third event in Touhou LostWord has returned: The Kosuzu Motoori Case Files! This time around, it seems a mystery is afoot - the Gensokyo Chronicle-Reference Materials are gone, and our three magician detectives are on the case! Don't know what the Gensokyo Chronicle is? It's a collection made by the Child of Miare (currently Hieda no Akyuu), a child born every hundred to hundred and fifty years as the reincarnation of Hieda no Are. It's essentially an encyclopedia of information about Gensokyo, made to safeguard its human residents and keep the scales of power from being tipped too far in favor of youkai. As such, the reference materials being stolen is a Big Deal. You have to wonder who'd be brazen enough to attempt a theft like that...

And yes, it might be a rerun, but let's not spoil the mystery for those who haven't completed the event before. Let's just try to act surprised and enjoy the mystery together.

You will have until the 28th at 1:59 UTC to engage in getting to the bottom of the mystery until the detectives are no longer able to drag out the mysteries and the event ends.

Need some Event Points for Scrolls and Fortune Dust? Click here for the guide to the best stages to farm. 

This is a Lite ver., and as such all stages and rewards will be available from Day 1. The rewards provided from this event differ from the original event as well. Additionally, the number of Event Points that drop from each stage have been increased.

For LostWord events, completing stages and missions rewards you with Event Points. These Event Points are used in a number of ways, for a ton of Coins, Scrolls, Tiles, and even Friend Rituals! This guide will teach you the ways in which you can earn and spend Event Points, to earn all of those amazing rewards.

How to get Event Points

The most straightforward way to earn Event Points is simply by completing stages. Each stage you complete will reward you with a number of points - the first time you complete certain stages for a day, you will gain between 3x to 9x that amount, as signified by a UI element on stage selection.

Additionally, you have both one time missions and daily missions. None of it is very complicated - just things like clearing the stages once, clearing any stage multiple times a day, or performing daily Prayers. The daily missions in particular are a wonderful source of points! For additional point gains, check out the latest event guide for stages to farm! 

In total, you will need 562,000 points to fully clear out both the Event Shop and the Lottery, as detailed below.

The first form of rewards come in rewards for hitting a total number of Event Points earned over the duration of the event, accessed from the Events icon on the home screen. These rewards are completely free, and only care about total points earned - you can freely spend your Event Points, and it will not affect your progress towards the next milestone at all. These scale up to 500,000, but you only need a total of 250,000 points to get the Friend Ritual (150k) and the Paper Doll (250k), and rewards come much slower after that point, so only grind as much as you feel comfortable with after that point! Also remember that you only need 422,200 points to fully clear out the Event Points Shop and the Lottery.

Additionally, as Medicine, an item that assists in the growth of story cards (and not to be confused with the Medicine Melancholy) have replaced some of the usual rewards of the Total Points Milestone.

The shop is the first of two ways to spend your Event Points, accessed through either the icon on the home screen or Sanae’s shop. As this is a Lite ver, the entire shop will be available from the start. This should be the first place you spend your Event Points, if you’re not aiming to obtain every reward. You will need 412,000 points in total to clear out the shop, not counting the 999 stack of coins that costs 1000 points each, totaling to 999,000 required points...

If you don’t intend to fully clear out the shop, your priorities should roughly be as follows:

Costume ★★★★★ Marisa's costume will quickly pay for itself thanks to the Event Point gain increase, and you can only get it during this event. This is the absolute first priority.

Friend Ritual ★★★★★ These handy items give you a random unit from a predetermined pool. A wonderful chance to gain additional units or uncap ones you already own!

Paper Doll ★★★★★ As the universal Limit Break item, this should be an absolute priority. Since this item isn’t added to the shop until the second half of the event, make sure to save 20,000 points for when it’s added.

Spirit P -  Varies How important additional Spirit P is depends on your situation. If you’re outpacing your Spirit P supply, make sure to buy these as you need them! Otherwise, if you find yourself constantly capping out on Spirit P, this isn’t very important.

Skill Books (Gold) ★★★★☆ These are rather difficult to come by normally - make sure to pick some up to upgrade your units with! They’re pretty cheap.

Coins ★★★★☆ You need a bunch of these for just about everything. Good thing the event gives you a ton in total.

Story Card Ritual ★★★☆☆ There’s a chance of getting a pretty good Story Card from this and, at worst, it’s at least 3 Tokens. 

Event Story Cards ★★★☆☆ The 5* story card here is very unimpressive, and outside of adding the MLB version to your journal if you wish to obtain all story card stories, it is not worth keeping around. However, the 4* story card is a small source of Yin ATK UP, which can be worth holding onto. Both of these items are limited to the event, so there is still merit in picking these up.

Skill Books (Silver) ★★☆☆☆ Whilst cheap, these aren’t particularly uncommon or in very high demand - they can wait.

Skill Books (Bronze) ★☆☆☆☆ Cheap, but this should be the absolute last place you spend your Event P on.

This is the other place to spend your Event Points, and where you should turn to when you run out of places to spend them on in the Shop. You can spend 50 Event Points to draw from a Lottery box, which consists of 375 predetermined items per box. These are a mix of Coins, Spirit P, Scrolls, and Tiles. Once you obtain all of the special prizes from a Lottery box, you can reset it and move onto the next box, though it’s recommended that you try to fully clear them out if possible. There are a total of 8 boxes, which means you will need 150,000 points to clear them out.

The "Special Prizes" are marked in red below!

The final form of rewards from events, these rarer points (thus the name) are randomly obtained as bonus drops from Event Stages. Also like Event Points, you can access the Rare Points shop through the icon on the home screen or Sanae’s shop. However, they share no other relationship - Rare Points are earned independently of Event Points, and are spent on different things.

If you don’t intend to fully clear out the Rare Point shop, your priorities should be as follows:

Music CDs ★★★★★ This is your only chance to obtain these, as the CDs sold are different every event, and are only obtained from events. If you miss a CD, it may be a long time before it shows up again. Do be warned 2 of these CDs will not show up until the second half of the event, so save 24 Rare Points for them.

Divine Dust ★★★★★ If you're looking to pick up some extra Divine Paper Dolls or Rings of Fate, this is a good chance to pick up some extra Divine Dust! 

Skill Book X ★★★★☆ These skill books give a ton of training points, and take 12 hours, perfect for overnight skill training. Do be warned you can’t use these for promoting units - they only serve to train skills.

Gold scrolls/tiles ★★★☆☆ Always nice to have more gold mats, but not your first priority.

Coins ★☆☆☆☆ Coins are nice to have but 50 coins per Rare Point isn’t a great trade compared to the other items. Save these for dumping your Rare Points at the very end of the event, and remember that additional X Skill Books and gold mats will be added at the second half of the event!

During each event, certain specially marked costumes will grant a 1.2x bonus (20%) to Rare Points and a 1.1x bonus to Event Points earned from stages. You only need to own the costume to benefit - you do not need to own, deploy, or equip the unit whom the costume belongs to with it. If you own multiple such costumes, their bonuses will stack additively (so for example, owning 3 would give you a 1.6x bonus to Rare Points and a 1.3x bonus to Event Points). These bonuses do not affect mission rewards, only stages.

The following characters' costumes will provide a bonus for this event: