In manga and anime, sometimes a flower sprouts out of a character's head as a manga symbol, meaning they're merry, carefree, happy-go-lucky, having no worry in the world, peaceful. It's used when a character is in love, or when they're being silly, stupid, as it means they've stopped being serious.
In anime, sometimes flowers are used as a background effect symbolizing that a character is peaceful, happy-go-lucky, carefree, easy-going, specially if they're in love, thinking about romantic things, or if they have a gentle, fuzzy personality.
In Japanese, agokui 顎クイ refers to a romantic scenario: when a guy holds a girl's chin up for a kiss.(dic.pixiv.net:顎クイ) This romantic move is a trope found in manga, anime, and dating sims, similar to the kabedon 壁ドン. When both occur simultaneously, it's called a kabekui 壁クイ.
In anime, sometimes a character rubs their knuckles against another's head to punish them. In English, this is called a "noogie."(merriam-webster.com:noogie)
See head pat for the softer sort of head rubbing.
In anime, sometimes characters get patted on the head, usually child characters and girls. This display of affection happen when they need to be consoled, or praised, or, mainly, because some people think this sort of scenario is cute.
In anime, some characters wear clothing with overly long sleeves, covering their hands either partially or completely. It happens simply because some people consider it cute.
In anime, hand holding is an obscene act done by two impure, perverted characters by placing the palm of one's hand against that of another's. "Hand holding" in Japanese is called te-tsunagi 手つなぎ.
WARNING: this article contains obscene imagery. Viewer discretion advised.
In Japan, a peace sign (piisu ピース) is often used when posing for photos, and so it also often happens in anime. We're talking about the V-shaped hand sign, the V-sign, that also means "V for victory" (✌), not the nuclear disarmament symbol (☮) that was used to promote peace.
In Japanese, ruumikku sain るーむっくサイン, "rumic sign," is a hand gesture similar to the corna or the ILY sign done by manga and anime characters when they're physically attacked or suddenly surprised by a situation.
The sign is also called ruumikku poozu るーみっくポーズ, "rumic pose," or chuudon poozu ちゅどーんポーズ, "chuudon pose."
In Japan, a hand gesture with index and little finger raised, and ring and middle finger bent, pushed forward together with the thumb, is a "fox sign," kitsune sain キツネサイン, as it imitates a "fox," kitsune 狐. It's also known by the katakanization fokkusu sain フォックスサイン.
In Italian, the "corna," in Japanese katakanized koruna コルナ, meaning "horns," tsuno 角, is a hand sign done by bending the middle and ring finger, and extending the little and index finger, so that they look like two horns. It's also known as sign of the horns.
This gesture is associated with the devil, with evil, and the phrase "rock on" in music. In Japanese culture, and even in anime culture, it has extra meanings.
Not to be confused with korona コロナ, which refers to the Coronavirus or Crona from Soul Eater.
In American Sign Language (ASL), the "ILY sign," in Japanese: ai-eru-wai sain ＩＬＹサイン, is a hand gesture meaning "I Love You." It's done by extending the little finger and index, bending the ring finger and middle finger, and extending the thumb perpendicular to the index. Like this:
In Japanese, placing the back of your hand against your opposing check is a gesture used to say (or ask if) someone is an okama オカマ, which is a term for effeminate and gay men, and trans women, sometimes considered pejorative.
The term for "crossing [one's] legs" in Japanese is ashi-kumi 足組み. It's a noun formed from the phrase ashi wo kumu 足を組む, "to cross [one's] legs."
