Mata, Itsuka. (また、いつか。)/guide

Mountain Bike (マウンテンバイク)
Go to Blue Block Field and find an entrance beside of blue blocks, on the separated path go to the left and enter the room with a mountain bike.

Flying Pan (フライパン)
Go to Blue Hall and find an entrance on the center map to the room with a flying pan.

Straw Hat and Butterfly Net (麦藁帽子と虫取り)
Go to Flower Sketch World and find a straw hat on the floor.

Megaphone (メガホン)
Go to Blue Block World and find an entrance in front of blue blocks to the Sunset Rooftop, on the first separated path go to the bottom and find the Magaphone.

High-school Student (高校生)
Go to Desert World and find a red entrance to the Underground, go to the bottom right to the Cave, go south to find a stick man.

Bug Cage (虫かご)
Go to Desert World and find a red entrance to the Underground, go to the right to the Geometry World, find a flower sketch to Monochrome World and search for the green bug cage.

Headsets (ヘッドセット)
Go to Blue Block World and find an entrance beside of blue blocks, on the separated path go right and head to the exit to the Crystal World, find a hole to the Dense Woods, search upper left to find the headsets.

Graduate Student (そつぎょうせい)
Go to Blue Hall and go to the top exit to the Number Field, find the red words "また、いつか. " under the trees to the Season Path, choose the Spring path to Sakura World, go to the west of the map to find a student that leads you to the School, enter the classroom and interact with the student who is looking on the window.

Pajama (パジャマ)
Go to Blue Block World and find an entrance in front of blue blocks to the Sunset Rooftop, go to the bottom right exit to the FC World, enter the staircase to FC Maze, find the exit and reach the bed with the Pajama.

Crew (のりくみいん)
Go to Desert World and find a red entrance to the Underground, go to the right to the Geometry World, find a flower sketch to Monochrome World and find an automatic door to the Spaceship, go through the door and go right then choose the second room, interact with the crew.

Shooting Star (シューティングスター)
Go to Desert World and find a red entrance to the Underground, go to the right to the Geometry World, find a flower sketch to Monochrome World and find an automatic door to the Spaceship, go through the door and go right then go to the exit on the right to the Cosmic World, find the shining star.

Hand Clap (ハンドクラップ)
Go to Blue Hall and go to the top exit to the Number Field, find the red words "また、いつか. " under the trees to the Season Path, choose the Summer path to Water Paddy Farm, go to the top exit to the Sketch World and find the hands.

Swimwear (水着)
Go to Blue Hall and go to the top exit to the Number Field, find the red words "また、いつか. " under the trees to the Season Path, choose the Summer path to Water Paddy Farm, go to the top exit to the Sketch World and find the beach ball doodle, navigate through the beach teleport maze, and interact with the box next to the beach umbrella.

Auto Bike (オートバイ)
Go to Color Notes World and find an auto bike.

Middle-school Student (小学生)
Go to Color Notes World and go between two pillars to the Ocean World, interact a gate that wraps you to the place with a little stick man, interact with the stick man.

Bass (ベース)
Go to High Tempo World and find the bass.

Sign Stand (立て看板)
Go to Neon World and find the sign stand.

Mic (マイク)
Go to School Furniture World and find a big music note.

Leaf (葉)
Go to Color Notes World and go between two pillar to the Ocean World, find a wrap point to the Beach, go to the sea puddle on the upper right to the 4 Seasons World and find a big leaf.

Wristband (リストバンド)
Go to Neon World and interact with the chrome geometry cube to the Water World, find the land that has long stairs and 4 layers and interact with the red NPC on the top.

Light Wings (光翼)
Go to High Tempo World and go between red music notes to High Tempo World B, go between the red pillars to High Tension World, find a floating glow with colorful wings.

White Shirt & Necktie (ワイシャツとネクタイ)
Go to School Furniture World and go between the tables to the Stave World, enter the white door to Red Wall World, find a stand with white shirt and necktie.

Battle Suits (戦闘服)
Go to Color Notes World and go between two pillar to the Ocean World, find a wrap point to the Beach, go between two red coconut trees to the War Zone and interact with the dead soldier.

Ninja Suits (忍装束)
Go to Color Notes World and go between two pillars to the Ocean World, go between the plants to the Ninja House, go left and go up until you reach a tatami place with two Japanese Calligraphy Paintings, interact the right painting to a room and interact another painting, you will arrive to the room with a Ninja NPC.

Aster (紫苑)
Go to School Furniture World and go between the tables to the Stave World, enter the white door to Red Wall World, find an entrance to the Sunset Street and go to the end to the Toy World, find the aster.

Merman (魚人)
Go to Neon World and interact with the chrome geometry cube to the Water World, find the circular land and interact with the mermaid in the middle.

End 1 (Katsuki & Shun)
After you got all 12 effects, drop the effects in the nexus then open the menu and select the skill (技能) slot, the word of また、いつか. will appear on the selection, select it will start the slideshow of their dream world and forced to wake up, then open the door to the ending.

End 2 (Katsuki & Shun)
After you got all 12 effects, sleep on the bed in the dream room to the lucid dream, interact with the stone gate to open and go up until you trigger the event, then you will get the Dog Tag effect, drop all 13 effects in the nexus and do the same thing of End 1.