10 anime characters who are terrible at keeping secrets

Anime characters often come with vibrant personalities, and some stand out for their inability to keep a secret. Whether it is because of their overly honest nature, lack of subtlety, or sheer excitement, these characters struggle to hold back sensitive information. Their slip-ups may lead to humorous, awkward, or even disastrous consequences, depending on the situation.

Whether revealing critical plans or spoiling a surprise, the loose lips usually cause chaos all around them. Though they never intend to hurt anyone, this candidness usually proves them unreliable when confidentiality really matters.

For keeping secrets, it is clearly an art that they have never been able to master. They thus remain memorable in all the wrong ways. From Luffy to Kana Minami, here are the ten anime characters who are terrible at keeping secrets.

Disclaimer: This list is ranked in no particular order and reflects the writer's opinion.

Asahi, Miyuki, and 8 other anime characters who are terrible at keeping secrets

1) Monkey D. Luffy (One Piece)

Monkey D. Luffy as seen in anime (Image via Toei Animation)

Monkey D. Luffy is straightforward and has no filter; he can't keep a secret. He reveals plans or intentions without any regard for the consequences, sometimes blurting out sensitive information in inappropriate situations.

His eagerness or innocence drives him to make revelations that no one should hear, such as shouting his plan to enemies or inadvertently broadcasting what his crew would like to hide.

Although the sincerity of this action is admirable, this often gets his crew into hot spots, for stealth and planning in the uncertain pirate world must be key aspects. This makes Luffy one of the anime characters who cannot keep a secret.

2) Goku (Dragon Ball)

Goku as seen in anime (Image via Toei Animation)

Goku's blunt and truthful personality often makes him a terrible secret keeper. His enthusiasm for fighting powerful foes can sometimes cause him to spill the beans about critical information without thinking of the implications.

For example, he usually shares plans or strategies with his enemies because he believes in a fair fight instead of secrecy. This habit sometimes puts his friends and the Earth in danger, for his openness gives no room for deception or strategy. Goku's subtlety makes him one of the anime characters who have a hard time keeping anything a secret.

3) Clara Valac (Welcome To Demon School! Iruma-Kun)

Clara Valac (Image via Bandai Namco Pictures)

Clara Valac is energetic and carefree, which makes her one of the anime characters who cannot keep a secret. Her impulsive nature and constant need for attention lead her to reveal anything on her mind without considering the consequences.

Clara's enthusiasm often carries over to the point of overwhelming her, and she unwittingly reveals sensitive information in discussions or playfulness. Unrestrained, this occurs because of her childlike enthusiasm and participation desire, which makes her an unreliable confidant, though with good intentions.

4) Asahi Kuromine (My Monster Secret)

Asahi Kuromine as seen in anime (Image via TMS Entertainment)

Asahi Kuromine from My Monster Secret is infamous for being unable to keep any secrets. Therefore, most of the comedy and tension in this story stems from his inability to keep the vampire secret of his crush, Youko, to himself.

His problems are further multiplied when his grandchild from the future reveals who she is almost immediately, highlighting that the bad trait of not being good at keeping secrets also runs in the family.

The honesty and straightforward nature of Asahi often lead him into chaotic, yet endearingly funny, situations. This places Asahi among the anime characters who cannot keep a secret.

5) Astolfo (Fate/Apocrypha)

Astolfo as seen in anime (Image via A-1 Pictures)

Astolfo is infamous for revealing sensitive secrets at the wrong times. He simply blurts important details multiple times in the story, such as the Servants' True Names and Noble Phantasms, often without concern for the fallout.

This habit creates enormous problems for the Black Faction, a group of assassins who operate in the shadows, discretion being the most important thing. Astolfo's inability to keep quiet is frustrating to his allies and also jeopardizes plans, making him a liability when subtlety and strategic thinking are required. This also puts him among the anime characters who cannot be trusted to keep a secret.

6) Miyuki Hoshizora (Smile PreCure!)

Miyuki Hoshizora as seen in anime (Image via Toei Animation)

Miyuki Hoshizora struggles with keeping secrets due to her excitable and expressive personality. Her enthusiasm often causes her to blurt out information unintentionally, especially when she’s caught up in the moment.

Even though her intentions never have malicious connotations, the inability of a person like this to hold composure during situations of tension is liable to accidental leaks of information.

A surprise plan or critical piece of information has more than once seen her words go against what really matters for it to stay safe. This makes her one of the anime characters who is terrible at keeping secrets.

7) Haruna Saotome (Negima! Magister Negi Magi)

Haruna Saotome as seen in anime (Image via Shaft)

Haruna Saotome is known to be an outspoken person who cannot keep secrets because she is nosy and talkative. She loves being an artist and gossip enthusiast, uncovering juicy details, and rarely hesitates to share them, often to the embarrassment of her peers.

Her tendency to dramatize and expose private matters stems from her playful personality, making her a source of both entertainment and frustration for those around her. She is a high-risk choice for confiding sensitive information, which makes her one of the untrusted anime characters for keeping secrets.

8) Kuwabara Kazuma (Yu Yu Hakusho)

Kuwabara Kazuma as seen in anime (Image via Studio Pierrot)

Kuwabara Kazuma is a simple, honest fellow who does the right thing in every situation; however, being so straightforward, he is a really bad secret keeper. His conscience and honesty frequently make him utter what he should not have spoken at all.

Kuwabara also has a very emotional nature that sometimes makes him spill the beans at the wrong time. His good intentions are always there, but he can never keep to himself critical information, which results in unintended consequences, making him one of the anime characters with unreliable confidence.

9) Kana Minami (Minami-Ke)

Kana Minami is known for her impulsive and careless nature, which makes her a bad keeper of secrets. She speaks before thinking and loves creating chaos for the sake of amusement.

Kana blurs out personal information, often by accident, and sometimes to add humor, thus creating many embarrassing moments and miscommunications. Because of her inability to hold her tongue and her need for drama, anything she's told in secret is at very high risk of being revealed in the most chaotic manner possible.

10) Ruby (Rave Master)

A still from Rave Master (Image via Studio Deen)

Ruby, the Sentinoid penguin in Rave Master, is known to be unable to filter out his thoughts. His tendency to say whatever comes to his head has gotten Rave Warriors into many tight spots.

Even when it's very hot in battle, Ruby has revealed the strategy of the team, leaving the group open to attacks and desperately seeking to catch up. Although never evil, Ruby's honest spontaneity continues to be an adversary to the rest of the group, who become victims during pivotal moments.

Final thoughts

In anime, keeping a secret is an art not many master, and the chaos that follows in the wake is a defining feature for them. It starts from the straightforward nature of Monkey D. Luffy, through Asahi Kuromine's slapstick humor, where he can never stop talking to say something serious. Be it Astolfo blabbering crucial plans or Ruby blurring battle strategies, well-intentioned yet disastrous revelation stays long.

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Edited by Somava