Guns Girl Z / Houkai Gakuen Ver.13.1 “Kaei Ryoran” Launches With Tiara Starlumos

Houkai Gakuen, also known globally as Guns Girl Z, received its major Ver.13.1 update on October 8, 2026. Alongside the update, the official account released the version PV “花影繚乱,” rendered here in Latin script as “Kaei Ryoran.”

The update goes beyond a new promotional video. miHoYo is preparing Tiara Starlumos as a new playable character while adding new stages, story content, equipment, familiars and achievements, alongside revisions to existing systems.

Quick Summary

• Game: Houkai Gakuen
• Japanese title: 崩壊学園
• Global name used in Google Play description: Guns Girl Z
• Developer: miHoYo Inc.
• Japanese publisher: miHoYo Inc.
• Core genre: side-scrolling action
• Format: mobile action game
• Active platform: Android
• Active platform: iPhone / iPad
• Latest version: Ver.13.1
• Update date: October 8, 2026
• Japanese PV title: 花影繚乱
• Romanization used: Kaei Ryoran
• Video type: official version update PV
• YouTube ID: 4SLzLbM8WCE
• New playable character: Tiara Starlumos
• Japanese character name: ティアラ･スタールーモス
• Tiara status: scheduled to be added as a playable character
• New content: stages
• New content: story continuation
• New content: equipment
• New content: familiars / 従魔
• New content: achievements
• Main Story: replay functionality added to Shinsei-hen
• UI: selected elements revised
• Bug fixes: multiple gameplay and equipment issues fixed
• Resonance Shop: new Pure ★5 equipment
• Resonance Shop weapon: 地脈式携帯端末
• Medal: パイン戦闘支援AI
• Medal: ロングネックの功績
• Medal: 甘味は変わらず
• Maintenance: October 8, 2026
• Maintenance window: 12:00–20:00 JST
• Update data: officially expected to exceed 100 MB
• Maintenance compensation: 600 Crystals
• Compensation requirement: Lv.3+ as of October 8 at 12:00 JST
• Compensation claim window: October 9–15, 2026
• New event: 福財招来 / Fukuzai Shorai
• Event start: October 9 at 12:00 JST
• Event end: October 23 at 12:00 JST
• Stage requirement: Lv.25+
• Event exchange shop closes: October 30 at 12:00 JST
• Event reward: Karin - 千金満堂
• Event reward: 幻惑の骸
• Event reward: Skill Material Selection Bag
• Event reward: 雪之音 fragments
• Event reward: 宿木葉 fragments
• Homu's Rewards: reopened
• Homu's Rewards period: October 9–December 1, 2026
• Google Play: official listing remains available
• Japanese App Store: official listing remains available
• App model: free-to-play with in-app purchases
• Google Play: lists more than 1 million installs
• Google Play description: states more than 30 million downloads worldwide
• Current status: Ver.13.1 released

“Kaei Ryoran” PV, Google Play, and Ver.13.1 Visual

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Tiara Starlumos Joins as a New Playable Character

One of Ver.13.1's biggest additions is Tiara Starlumos, who is scheduled to join the playable roster.

The initial feature notice does not yet detail her complete abilities, dedicated equipment or banner schedule, leaving those specifics for later official announcements.

New Story Content and Replay for Shinsei-hen

Ver.13.1 introduces new stages and further story content while also revisiting older material.

A story replay function has been added to Shinsei-hen (新生編), making it easier for players to revisit that part of the main story.

Equipment, Familiars, Achievements, and System Fixes

The update also adds equipment, familiars and achievements.

Fixes cover issues involving the 千機戦場 stage, search functionality under 特殊スキル, and several specific weapon, medal and EX skill interactions. The Resonance Shop also receives additional Pure ★5 equipment.

Fukuzai Shorai Opens on October 9

The 福財招来 / Fukuzai Shorai event runs from October 9 at 12:00 JST until October 23 at 12:00 JST.

The event requires Lv.25 or higher and rewards players with event score and Fukuzai Shorai Coins, alongside items including Karin - 千金満堂, 幻惑の骸 and material or fragment rewards.

Why This Matters

1) Ver.13.1 introduces another playable character

Tiara Starlumos becomes the update's clearest new roster addition.

2) The update also improves older content

Shinsei-hen receives replay functionality while multiple existing systems are corrected.

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3) The PV gives the version its own visual identity

“Kaei Ryoran” serves as the main promotional video for the October update.

Houkai Gakuen and Ver.13.1 Information

For now, the additional important information currently known includes:

• the Japanese title is 『崩壊学園』
• Houkai Gakuen is a commonly used romanization of the Japanese title
• the Google Play description also uses the name Guns Girl Z
• the game is developed and published by miHoYo
• its core gameplay is side-scrolling action
• characters are controlled in real time
• players can switch and use weapons during combat
• equipment, costumes and medals are central to character builds
• the game uses a free-to-play model
• in-app purchases are available
• Ver.13.1 launched on October 8, 2026
• the update was deployed through major maintenance
• maintenance was scheduled for 12:00–20:00 JST
• the service was unavailable during maintenance
• players need the latest app version after the update
• update data was expected to exceed 100 MB
• Wi-Fi was recommended for installation
• eligible Lv.3+ players receive 600 Crystals as compensation
• compensation is delivered through the in-game mailbox
• distribution runs from October 9 through October 15
• the Ver.13.1 PV is titled 『花影繚乱』
• this article uses the romanization Kaei Ryoran
• the official PV has YouTube ID 4SLzLbM8WCE
• Tiara Starlumos is scheduled to become playable
• her Japanese name is ティアラ･スタールーモス
• her full kit was not detailed in the initial feature notice
• new stages are being added
• the story is being updated
• new equipment is being added
• new familiars / 従魔 are being added
• new achievements are being added
• Shinsei-hen now has story replay functionality
• selected UI elements were revised
• a bug affecting 千機戦場 was fixed
• search issues under 特殊スキル were fixed
• a problem involving ヨームカンクスの賜物･神寵 was fixed
• interactions involving ロングネック起動中, ロングネックの功績 and 慈愛姫 were corrected
• the Resonance Shop adds the weapon 地脈式携帯端末
• the Resonance Shop adds the medal パイン戦闘支援AI
• the Resonance Shop adds the medal ロングネックの功績
• the Resonance Shop adds the medal 甘味は変わらず
• 福財招来 begins October 9 at 12:00 JST
• its stages close October 23 at 12:00 JST
• its exchange shop closes October 30 at 12:00 JST
• Fukuzai Shorai requires Lv.25+
• clearing quests provides event score
• Fukuzai Shorai Coins can be exchanged in the event shop
• rewards include Karin - 千金満堂
• rewards include 幻惑の骸
• a Skill Material Selection Bag is included
• 雪之音 fragments are included
• 宿木葉 fragments are included
• Club Quest is scheduled for October 12–18
• Club Quest requires club Lv.3+
• Homu's Rewards runs October 9–December 1
• Homu's Rewards uses daily, weekly and period missions
• both free and paid reward tracks are available
• 33 Crystals can be exchanged for 1 Homu Point during the event
• the official Android listing remains available on Google Play
• the official iOS listing remains available on the Japanese App Store
• game information is available through the Official Website
• social updates are available through Official X
• the new version PV is available through the Official Ver.13.1 PV
• Android is available through Google Play
• iOS is available through the App Store
• complete feature details are available through the Official Ver.13.1 Update Notes

Closing

Ver.13.1 expands Houkai Gakuen with Tiara Starlumos, new story and stage content, while also making targeted improvements to established systems.

The “Kaei Ryoran” PV acts as the update's visual introduction, with Fukuzai Shorai and additional reward content following immediately after the version launch.