When Tagged, Omori can use his knife to cut obstacles such as traffic cones down to clear paths.
Omori wears a black tank top, long black socks, and black and white striped shorts. In direct contrast to the bright and colorful world of Headspace, Omori is only rendered in monochrome. His hair is virtually identical to Sunny's.
Omori's personality is largely left up to player interpretation, as he is a mostly silent protagonist. Despite this, when he writes in the Foe Facts! journal, his comments tend to be snarky and very grounded compared to his friend's comments. He is notably never depicted emoting outside of battle.
|WARNING: This section contains spoilers for the main story of OMORI.|
At some point following Mari's death, Sunny presumably began visiting Headspace as Omori. The origins of Omori are not fully clarified, although it is heavily implied through the cutscene that plays at the beginning of the Two Days Left dream that Sunny originally manifested as himself in White Space, but eventually manifested Omori, and was no longer able/willing to enter White Space as himself. The door to Headspace appears after this happens, suggesting that it's creation was a direct consequence of Omori's 'birth.'
Inside Headspace, Omori can freely visit a dream world where his friends reside along with what appear to be representations of his acquaintances and fictional mascots. The entirety of Headspace seems to exist solely for the purpose of escapism, a distraction from the reality and consequences of Mari's death: Mari is still alive and well, and his friends still hang out together, exactly the same as they were four years ago, before Mari's death. Sunny's repeated escape into Headspace is strongly implied to be the reason behind his refusal to leave his house for four years.
Omori's true purpose is to repress everything related to Mari's death using his complete control over Headspace. Dialogue from the residents of Black Space and Deeper Well suggest that, whenever Sunny's subconscious begins to remind him of the truth, Omori 'resets' Headspace in order to lock all reminders of it, such as Something, back into Black Space, until it inevitably leaks out again. This cycle appears to have gone on for the four years since Mari's death, with the loop only potentially breaking during the events of the Sunny route.
As the story progresses, Omori appears to change from merely a persona adopted by Sunny within Headspace to a separate personality of sorts, who slowly turns against Sunny as he closes in on the truth behind Mari's death. This culminates in the final battle of the game, where he fights Omori in White Space to decide his ultimate fate, as the latter attempts to take over his mind and body.
|WARNING: This section contains spoilers for the alternative routes of OMORI.|
The plot is notably changed as Sunny represses more memories of Mari's death as he chooses to shut himself away even more than before. By the time Omori arrives in Black Space, he slowly begins to take over Sunny's mind and body. However, Stranger and Something attempt to stop Sunny from submerging himself further into his dream world of escapism. Sunny tries to fight off Stranger but fails as the shadowy figure overwhelms him, leading him to be transported into Red Space, where Omori awaits him on his throne of hands.
From there, Omori descends from his throne and helps Sunny withstand Stranger's wrath. The battle ultimately ends with Stranger fading away, allowing Omori to rescue Basil in the Church Of Something. Omori and Basil leave Black Space and return to Neighbor's Bedroom, where their friends are sleeping in their beds.
Once Omori and Basil fall asleep, as instructed by the Big Yellow Cat, this causes Headspace to be reset. This leads to the first few minutes of the game to be somewhat repeated with few changes: Basil appears to have never discovered the truth, more areas are expanded, and more optional sidequests are available for Omori and friends.
Sunny eventually wakes up, only to find Something following him at every step of his house. He is stalked as he completes the last of his to-do list, before succumbing to his self-hatred and guilt as he falls asleep, completely unable to repress Something's existence. As he attempts to sleep, Omori decides to 'save' him from his trauma by fusing with him, this time permanently as he hijacks both his mind and body, trapping Sunny in an endless loop of repression and discovery as he sentences himself to dream forever, unable to discover the truth.
After waking up once more, there are two possible endings that can be achieved. If Sunny goes to sleep, he will wake up and leave the house with Something following him, ending with the credits rolling and the sound of sirens, possibly implying that Basil's suicide still happened in this route. Another option is for the player to go into the menu and use the stab function, causing Omori to stab Sunny and commit suicide.
Skills have a basic 20% variation in damage (Excepting those with a fixed amount and release Energy).
DEF refers to Enemy's Defense unless stated otherwise.
|Sad Poem||Inflicts sadness on a friend or foe. Costs 5 .||Default|
|Guard||Acts first, reducing damage taken by 50% for 1 turn. No Cost.||Default|
|Stab||Deals 1.5 x ATK - DEF. If Omori is any tier of Sad, it will deal 2 x ATK. It always hit right in the heart. Costs 13 .||Level 3|
|Bread Slice||Deals 2.5 x ATK - DEF. If it's a killing blow, gain bread. Costs 10 .||Level 5|
|Mock||Deals 3 x ATK - DEF. if the target is any tier of Angry, it will decrease its attack value by 3 tiers. Costs 20 .||Level 7|
|Hack Away||Deals 2 x ATK - DEF three times. If Omori is in any tier of Angry, it will instead deal 2.25 x ATK - DEF. Costs 30 .||Level 10|
|Observe||At the end of the turn, applies either a "single-target" or a "multi-target" state to the target, forcing it to use either a single-target attack or a multi-target attack for two turns. This can vary from enemy to enemy and can be seen in detail on their respective enemy pages. No cost.||Shawn|
|Lucky Slice||Deals (ATK + LCK) x 1.5 - DEF. If Omori is in any tier of Happy, it will deal (ATK + LCK) x 2 - DEF. Costs 15 .||Level 12|
|Trick||Deals 3 x ATK - DEF damage, if the target is on any tier of Happy, it decreases its speed by 3 tiers. Costs 20 .||Level 15|
|Painful Truth||Deals 2 x ATK - DEF damage, and inflicts Sadness to Omori and his target. Costs 10 .||Level 19|
|Shun||Deals 3 x ATK - DEF to the target. If the target is Sad, it decreases its defense by 3 tiers. Costs 20 .||Level 20|
|Stare||Reduces the target's speed, attack, and defense by one tier. Costs 45 .||Level 25|
|Exploit||Deals 2.5 x ATK - DEF. If the target has any emotion, it will deal 3.5 x ATK - DEF. Costs 30 .||Level 30|
|Final Strike||If Omori is Neutral, it will deal 3 x ATK - DEF. If Omori is on the first emotion tier, it will deal 4 x ATK - DEF. If on the second emotion tier, it will deal 5 x ATK -DEF. If on the last emotion tier, it will deal 6 x ATK - DEF. Costs 50 .||Level 35|
|Red Hands||Deals 3 x ATK - DEF four times to a target. Costs 75 .||Hikikomori Route|
|Vertigo||Deals 3 x AGI - DEF to all enemies, and decreases their attack by 3 tiers. Costs 45 .||Defeating Heights in the Hikikomori Route|
|Cripple||Deals 3.5 x ATK - DEF to a target and decreases its speed by 3 tiers. Costs 45 .||Defeating Spiders in the Hikikomori Route|
|Suffocate||Deals 400 damage to all enemies, and decreases their defense by 3 tiers. Costs 45 .||Defeating Drowning in the Hikikomori Route|
- Omori's Angry and Injured portraits, unlike all other animated portraits in the game, only have two animated frames as opposed to three.
- His Happy portrait also notably lacks blush on one frame.
- A female version of Omori was once planned early in development but was eventually scrapped. The sprites are still used in-game on the Omori route should he drink the Mystery Potion.
- The cutscene is called omori_origin.webm within the game files.