Mouthwashing Daisuke Guide: The Tulpar's Intern

Daisuke is the intern aboard the Tulpar in Mouthwashing, working under the mechanic Swansea. His eagerness to help, sociability and limited experience make his place in the crew distinctive. He depends on more experienced colleagues for guidance, which makes their judgment especially important whenever a task involves danger.

This guide begins with his role and personality, then marks full spoilers before discussing the foam incident and the later damaged-vent sequence. They are different events with different outcomes. For the five human crew members and their jobs, see the character overview.

What Daisuke's internship means

Daisuke is learning within a working crew rather than arriving as an experienced specialist. Swansea supervises him, while the captain and copilot hold other forms of authority. That position shapes both what he can be asked to do and how much confidence he has in evaluating a request.

His willingness to contribute is not the same as understanding every risk. When an inexperienced person wants to be useful, the people giving instructions retain responsibility for the conditions of the task. Mouthwashing makes that imbalance important without turning the internship into a progression system or a set of skills the player can improve.

It is useful to follow who explains a problem to Daisuke, who reassures him and who benefits from his agreement. His apparent willingness alone does not answer whether an instruction is reasonable. The experience gap is part of the relationship, not a personal defect that explains everything that happens to him.

His relationship with Swansea

Swansea's blunt manner can make the mentorship seem defined by irritation. Their scenes also establish practical dependence and concern. Daisuke looks to someone who knows the work, while Swansea is responsible for guiding someone who does not yet share that experience.

The relationship becomes clearer when actions are considered alongside tone. A harsh remark does not automatically establish indifference, just as an encouraging instruction does not guarantee care. The story gives the audience reasons to reassess first impressions of both men.

The Swansea guide discusses this connection from the mechanic's perspective. For Daisuke, the central point is that mentorship gives an older colleague influence over how a newcomer understands his own usefulness and the safety of a request.

Curiosity and a life beyond the internship

Daisuke brings friendliness and enthusiasm into a story dominated by isolation. Those qualities matter because he has interests and relationships beyond his immediate function aboard the freighter. Treating him only as the inexperienced member awaiting instructions misses some of the contrast his presence creates.

In the official anniversary Q&A, narrative designer and art lead Johanna Kasurinen describes Daisuke's interest in colorful streetwear and thrifting. The answer connects his enjoyment of expressive clothing with earlier limits on how he could dress. It also gives him ordinary experiences of shopping with his mother.

These details support a fuller picture of his tastes; they do not establish an exact age, nationality or complete family history. Calling him an intern is accurate. Converting that job into a precise birthday or assuming a nationality from his name goes beyond the evidence used here.

Full story spoilers from this point onward, including severe injury, violence and Daisuke's death.

The earlier incident occurs before the crash, when Daisuke becomes trapped in the ship's foam during work involving a vent. Curly retrieves the fire axe and uses it to free him. Swansea is present, and the sequence establishes a repair problem and the dangers of the ship's cramped spaces.

The later incident takes place after the crash, during the crisis around the locked medical room. Jimmy sends Daisuke through a damaged ventilation route. Daisuke reaches the room but is gravely injured. This is not the earlier foam problem returning with another opportunity to use the same rescue solution.

Mouthwashing's nonlinear presentation makes the distinction easy to miss. Follow the scene's position relative to the crash, the viewpoint character and the objective. An early successful rescue does not establish a reusable method that prevents the later tragedy.

How the earlier foam rescue works

Community walkthroughs document the fire axe case code as 2609. During Curly's earlier sequence, the Code Scanner reveals the covered code near the case in the utility area. Curly takes the axe and uses it on the foam trapping Daisuke, then leaves the remaining cleanup to Swansea.

That is an inventory-and-environment objective. It should not be confused with attacking Daisuke or choosing whether to spare him. If you are stuck locating the case or understanding the order of interactions, use the walkthrough for the scene's navigation.

The scene also gives context to the later request. The damaged spaces aboard the Tulpar already have a history of creating danger. Remembering that history makes the decision to send the intern through another compromised route more consequential.

What happens after the medical-room vent

Jimmy drugs Swansea to gain access to the utility area and directs Daisuke through the damaged route toward the medical room. Daisuke is severely wounded during the passage. Anya is found dead in the room after taking the remaining medication, so reaching it does not produce the rescue Jimmy's immediate objective suggests.

Jimmy then attempts to treat Daisuke's injuries with mouthwash, having used the proper disinfectant in the drugged drink. The scene presents a desperate and inadequate response within the fiction. There is no basis here for a detailed medical theory about exactly which wound or substance determines the outcome.

Swansea subsequently kills Daisuke with the axe to end his suffering. That is the outcome documented in the story and community walkthroughs. The earlier foam rescue, the later injury and Swansea's final action should remain separate when explaining how Daisuke dies.

Could a different player choice save him?

The documented game follows a fixed narrative. There is no established dialogue choice, character build or alternate axe interaction that turns the later vent sequence into a successful rescue. Explaining responsibility in the story does not mean the player receives a branching choice that corrects it.

His fate exposes the consequences of an unequal relationship: someone who wants to help is sent into danger by someone with more influence. That interpretation keeps attention on the decision and its conditions, rather than blaming Daisuke for lacking experience. The ending explanation places his death within the crew's broader collapse.

His employee card is a separate objective

Daisuke's employee card appears on the lounge table with the board game during the relevant post-crash scene. The official Steam achievement asks the player to find his card; it does not indicate a survival route or an alternative ending.

Use the achievement guide for the collectible's timing. The card preserves a different kind of attention to him: Daisuke is a named colleague with an identity and a life outside the dangerous task he is assigned, rather than simply the person who can fit into a vent.