That Time I Got Reincarnated as a Slime Season 4 Episode 1: New Days

The episode opens with a sweeping view of Tempest, a bustling city nestled amongst green mountains, a picture of peace and industry. We then follow Shuna as she searches for Rimuru, her expression shifting from calm to worried. Her silent quest highlights Rimuru's frequent disappearances. Rimuru eventually appears as a playful slime, surveying the city, utterly unaware of Shuna's concern.

Rimuru, now in his human form, reflects on Tempest's remarkable journey. He recounts its humble beginnings as a small goblin village, transforming into a diverse city where various monster races coexist. This montage of growth and alliance building underscores the success of his leadership. He proudly declares his goal: a 'Human-Monster Coexistence Zone,' solidifying his ambition for a peaceful future.

The streets of Tempest teem with life, a vibrant tapestry of humans and monsters interacting without strife. Rimuru walks among his people, greeting them with genuine warmth. He shares a moment with a child, offering a simple reminder to be careful, then enjoys freshly made takoyaki. This daily scene reaffirms the tangible reality of his vision, showing not just progress, but happiness.

Beyond daily life, Tempest is a city in constant evolution, with construction in full swing. Rigurd and Geld oversee the building of new structures, including a magic train station and a grand auditorium. Rimuru's enthusiasm for these projects is evident; he envisions a future where Tempest is connected to other nations by rail. This ongoing development speaks to the ambitious scale of his plans.

The newly established dungeon is presented as both a scientific facility and a humorous elf bar. Yet, not all is smooth; Kaval, a frustrated adventurer, vehemently complains about the dungeon's unforgiving nature. His outburst prompts the imposing arrival of Benimaru, whose glare quickly silences the man. Rimuru then acknowledges the need to address these issues, demonstrating a leader's willingness to adapt.

Shizue Izawa teaches elementary-aged monster children, imparting knowledge with calm authority. Rimuru, initially playful, observes the class, only to be humorously flattened by Shizue's casual discipline. His subsequent thoughts reveal a deeper concern: his certainty that Yuuki Kagurazaka is a threat. This realization casts a shadow over the otherwise idyllic scene of learning.

Shuna finally finds Rimuru, presenting him with a special dessert she painstakingly prepared. His delight is immediate and genuine. However, the mood shifts when Diablo offers Rimuru tea, only to have it 'taste-tested' by himself, thwarting Shion's apparent attempt to introduce a rather potent brew. Diablo's theatrical pain provides a darkly humorous moment, showcasing his peculiar loyalty.

In stark contrast to Tempest's openness, Yuuki Kagurazaka is seen in a dimly lit room, discussing his manipulations with Laplace, Footman, and Mariabell. He acknowledges Rimuru's suspicion, yet remains confident in his ability to maintain the status quo through cunning. Yuuki dismisses their concerns with a sly smirk, asserting his control over the situation and his deeper, undisclosed ambitions. His eyes gleam with unsettling resolve.

Rimuru convenes a meeting for the dungeon's operation, expressing his frustration over the high failure rates and low visitor numbers. Kaval, the previously disgruntled adventurer, surprisingly offers insightful, game-like solutions, such as tutorials and in-dungeon amenities. Rimuru enthusiastically adopts these ideas, delighted to discover Kaval's shared 'Isekai-jin' background, injecting a new dynamic into the dungeon's future.

Back in his office, Rimuru continues his work, unknowingly protected from Shion's 'special' tea by Diablo's intervention. Diablo reveals his sinister method of ensuring Rimuru's safety, confirming the tea had been tampered with. He then requests permission to recruit a familiar from his old acquaintances, asking Rimuru to provide a body. His unwavering, almost terrifying, devotion to Rimuru is palpable, and Rimuru grants his wish.

The episode closes with a chilling glimpse into the human political landscape. Mariabell and Grandbell Rosso are shown plotting, their discussion bathed in an ominous red light. Mariabell fiercely states her determination to achieve the Rosso family's absolute rule, emphasizing humanity's divine right to govern. Grandbell's final, menacing glare and the movement of a king chess piece symbolize their unwavering resolve to dismantle Rimuru's vision.