Kubo and the Two Strings/Heartwarming

During the prologue, Sariatu curls up to her baby son and consoles him.
When Kubo asks his Mom what is his father like, she warmly describes that he was just like Kubo. Funny, kind, and clever. Importantly, Hanzo loves his family.
Beetle and Monkey's relationship ceomes heartwarming and a bit sad, after the reveal is that they are Hanzo and Sariatu, Kubo's parents. They both bicker with each other one minute and in the next, show affection, and they both care about Kubo.
Monkey tucking in Kubo, after the latter falls asleep.
How Kubo and Beetle meet. Despite that Beetle kidnaps him, the kid somehow stops Monkey from injuring/killing Beetle instantly, since he undertands "He wasn't going to hurt me."
Kubo being popular and likeable among the Sun Villagers, besides his personality and origami skills. It's a refreshing change from the usual "ParaNorman plot."
- Noting his relationship with Kameyo, the elderly beggar woman who greets him whenever he comes to the village. - Which is every day. She even treats him as though Kubo's her own grandson, at the ending,Kameyo literally became his step-grandmother!
- Despite Kubo leaving his fantastic stories on a Cliff Hanger and not finishing them, the Sun Villagers not just come when he starts telling the stories and they watch in awe, obviously they don't resent him. Usually they complain and are sadden by the lack of an ending, albeit it's implied thaat these are the same reactions for years! Most people would just cease caring eventually by the unsatisfying endings.
After meeting Beetle, Kubo takes a shine to him. Despite the fact that the huge beetle kidnaps him, Kubo got Monkey to not hurt Beetle, since he understood that "He wasn't going ot hurt me."
Just before Beetle dives into Long Lake to find and retrieve the Breastplate Imprentable, he flirst with Monkey. Despite the fact that he doesn't remember her, Hanzo loves his wife.

Beetle:"You gonna miss me, Monkey?"

- After diving in, Monkey utters quietly, "Be careful..." Despite that Beetle frustrates her, she shows concern for him.
Kubo's relationship with his own mother. During the day, he takes care of her, though at night, when Sariatu is lucid, she amazes him with the stories of his father.
Once Kubo reveals to Beetle, that he's Hanzo's son, Beetle rejoice! Even giving Kubo the legally equivalent of a hug at learning this. The first time in years since his curse, Beetle got a purpose once more - To protect his Master Hanzo's son. Importantly, Beetle has hope again.
- Heartwarming in Hindsight: Beetle just found his own son. The music even goes into a gentle crescendo, as though the universe is melting at their reunion.
- After this, Beetle bows down and swears to protect Kubo with his own life if necessary. Kubo is moved and awed by this, since Beetle unknowingly shows just how worthwhile the boy is, just for the first time in his whole life.
Beetle teaching Kubo how to use a bow and arrow and to fish. Especially, since The Reveal states that Beetle is Hanzo.
The Reveal that Monkey is Kubo's mother means that Kubo gets to spend time with her real self, instead of the comatose, fading waif he'd known his entire life.
- After learning the truth and reuniting with her. When Kubo regain consciousness from almost drowning in Long Lake, he first sees Monkey, his Mother reincarnated. Resting his hand on hers and quietly calls her by name. Monkey just hugs him warmly.
Mainly the tale of how both Sariatu and Hanzo met.
Monkey tucking Kubo in bed after he falls asleep.
Monkey confines to Beetle that she's Secretly Dying, fearing that Kubo will be alone when she's gone, Beetle tells her otherwise. Since he swore to watch over him. Once, instead of the usual sarcasm responds, she thanks him humbly.
The trio - Monkey, Beetle, and Kubo - admiring the flying golden herons flying in the distance.
During the journey, Beetle asks Kubo what he did before going on the quest. After Kubo tells him about his job as a storyteller and taking care of his ailing mother, Beetle tells him earnestly that Kubo "Was very much a hero." Heartwarniming since Beetle is not just a samurai, but Hanzo himself.
- Doubles as a Fridge-Heartwarming: Since Kubo was asking his Mom what Hanzo was like. Now it's Hanzo asking what his own son was like before the quest began.
While on their way to Hanzo's fortress, Beetle lifts Kubo and carries him on his back. They both exchange smiles and the kid gives Beetle a shoulder hug. To double the heart-warmingness: Since Beetle is basically Hanzo. Kubo hugs his Disappeared Dad, who he wanted to meet after all these years! In addition, Monkey smiles at this. Considering that Beetle swears to watch over Kubo if anything happens to her, she's very happy, knowing that Kubo will be in good hands.
After finding the last piece of the armor, Kubo discovers that the villagers survived, including Kameyo. Unfortunately, there's no time for him to reunite with them. But it's a tiny comfort that his friends and neighbors are alive.
Kubo using what he knows best, his shamisen magic, instead of the armor just to defeat the Moon King is a heart-warming example of He's Back. Since Kubo is just applying what his mother taught him about memories. Remembering that he's a story teller first and foremost, and that it's his father, Hanzo, who told him that he was a hero back when he was story telling. Lastly, Kubo remembers his promise to his mother to not be an expy of his grandfather.
- Before that Kubo was about to use the Sword Unbreakable and resume fighting. As he was reaching for the hilt, his two bracelets slide out from his sleeve: One woven from Saratu, his mother,'s hair and the other from his father's bow. The two bracelets (aka the titular two strings) reminds our hero of what his true power is: storytelling and memories.
Beetle and Monkey's relationship becomes heartwarming yet also a bit sad in a hindsight sense, after it's reveal that they are both Hanzo and Sariatu, Kubo's parents. One second they bicker and the next they show affection, and both love Kubo. Adding the fishing scene, were they unknowingly have a family dinner for the first time, and one gets an idea what it would be like if Kubo has both of his parents around.
When Raiden becomes human and amnesiac, Kubo and the rest of the Sun Villagers would be perfectly justified with turning him into an outcast, considering everything he's done to them. Instead they welcome and accepted him into their community, making sure that he'll be a good person from now on - Even if it means that they have to tell some white lies.
- Since the Moon King is confused and states that he doesn't even know who and where he is, Kubo doesn't know how to react, since he's still shaken by deep resentment. Though Kameyo sees Raiden briefly and makes him a background story, holding on to him with no fear and encouraging the others to help her make him into a pleasantly, kind man.
- In an odd sense, the Moon King got his wish, but not in how he expected. Instead of making Kubo as part of his family, he became part of Kubo's. The bonus is giving him a chance to learn what a real family is like.
- The whole Raiden's amnesiac personality. When he awakens to his new existence as a mortal, he doesn't show his trace of his cruel, arrogant personality. It seems as though his former personality is not his true nature, but a mask that he wears to appear imposing. Without the memories of said-mask, the Moon King is shown to be meek and gentle. Rather than arrogantly demanding Kubo where he is and what happen, he mournfully admits he doesn't remember anything at all about his past-life, and "C-can you help me?" humbly to Kubo.
- This is topped off with Kameyo introducing the amnesiac Raiden to Kubo. Promising Raiden that she'll help him remember his life. He ask Kubo "Really?" Briefly, Kubo has a bit of resentment...Until, the boy smiles compassionately and warmly answers "Of course."
The final scene which also doubles as a Tear Jerker, Kubo being comforted by his parents' spirits. Three of them smiling, until the screen goes black, and the credits roll.
The idea that our lost love ones remain alive when we share stories sabout them is heartwarming in and of itself.
- Monkey explaining that despite stories having an end, death is mainly a "shift" into a newer and just as exciting story. The first part is stated by Kubo to Raiden in the final battle, before all the Sun Village spirits join him.