Deaimon: Recipe for Happiness

A regular customer cancels their order. Nagomu's father, Irino Heigo, is furious with him, thinking that Nagomu has done something again. Heigo and Nagomu go to apologize to their regular customer. There they find out that the cancellation was actually connected to someone else who works at Ryokushou, Seto Saki.

On a day off from work, Itsuka and Mitsuru run into Nagomu's ex-girlfriend, Matsukaze Kanoko, in town. Mitsuru and Kanoko haven't met before, though Itsuka knows them both. The three decide to have lunch together. Mitsuru and Kanoko both get excited talking about Nagomu while Itsuka is perplexed by the unusual atmosphere between the two women.

Everyone at Ryokushou is participating in the Miyama school district's sports festival. Itsuka feels shy and awkward around Nagomu, causing her to adopt a brusque manner toward him. But in his loud cheers of encouragement she feels the warmth of family. Nagomu's father, Heigo, gets overly fired up and ends up hurting himself. Nagomu and Itsuka have to step up to take his and Nagomu's place in the parent-child event. Meanwhile, at Ryokushou, a woman calling herself Itsuka's mother appears.

A new artisan, Kisaichi Hiiro, arrives at Ryokushou. Enchanted by artisan Tatsumi Masa's sculpted sweets, Hiiro decides to become a wagashi artisan herself. However, her overly serious mindset and perfectionism cause her to lose sight of her surroundings and to make mistakes. She becomes despondent, then Masa teaches her about the spirit of an artisan. Amidst all of this, due to a whim of Nagomu's, Ryokushou holds a "Hands-on Wagashi Class" at the elementary school Itsuka attends.

Kanoko followed Nagomu to Kyoto, but back when they parted ways, she'd been stubborn and said, "I like Western sweets better." Faced with that, she can't find a way to be upfront and cheer Nagomu on now. Meanwhile, Nagomu begins kicking up a fuss about losing his headgear from his band, Chestnut Manju. With Kanoko and Itsuka's help, Nagomu searches for it, but...

One day, with Christmas near, a message and a fir tree sent by Itsuka's mother arrive. Remembering back to the broken promises from when she was little, Itsuka is afraid to make another promise with her mother. But Nagomu's words give her a push, and she tells her mother that she'll be waiting. Yuzu yokan causes Nagomu to remember a conversation he had with his grandfather.

Nagomu is laid up in bed with a cold, and as his consciousness grows hazy, he remembers a senpai from his school days who went off to Tokyo to chase a dream. That night, as Itsuka tends Nagomu, she glances up through the window and sees snow fluttering down. Snow on the day before Valentine's Day. Seeing the snow piling up on the ground, Itsuka is reminded of the day when she was first left in the people of Ryokushou's care. Itsuka doesn't have good memories of snow. Nagomu makes some new ones with her, building snowmen.

For Itsuka's birthday, Nagomu uses his "Going Somewhere Together" ticket and takes her to Hirakata Park. While out with Nagomu, Itsuka's remembers when she went to the park with her father. When they get back to Ryokushou, they find a wagashi cake and birthday party for Itsuka waiting for them. Itsuka always seems to be chasing after the shadow of her father. Concerned, Nagomu comforts her. And in reply to Nagomu's words, Itsuka...