The Name Seishin Kan in Japanese/Chinese on a Custom-Made Wall Scroll.

正心館 is the name Seishin-Kan in Japanese.

Seishin (sometimes romanized Shoushin or Shoshin) means “correct mind” or “right heart.” Kan can mean building or establishment.

不屈の精神 is one of several versions or ways to write “Indomitable Spirit” in Japanese.

This one is the famous “Fukutsu no Seishin” phrase.

押忍の精神 is the name Osu No Seishin or “Spirit of Osu” in Japanese.

This Spirit of Osu is an essential concept in Karate. You will hear “Osu!” shouted in every Karate dojo which is not just a sign of respect and obedience to the Sensei but also means patience, determination, and perseverance. Shouting “Osu!” serves as a reminder to embody these qualities.

勸 is the simplest Chinese, Japanese Kanji, and old Korean Hanja word for encouragement or the act of encouraging someone.

This can also mean: to advise; to urge; to try to persuade; to exhort; to console; to soothe.

歡 means joyous, happy, delightful, and pleased.

歡 represents external happiness that may have you clapping and cheering.

Please note: The other happiness/joyful which looks like "喜" is more popular.

歡 is the ancient/old version in China and Japan. After WWII in Japan, they started using 歓. Just let us know if you want this modern version instead of the ancient one.

See Also:  Happiness

武心館 is the title for Bushinkan or Bushin-kan, which translates roughly as Warrior Heart Hall/House.

糸東流氣目館空手道 is the title for Shito-Ryu Ki-Me-Kan Karate-Do.
A school of Karate.

Note that while this title can be pronounced in Chinese, it only makes complete sense in Japanese.

簡 expresses the idea of something simple or the essence of simplicity in life in Chinese.

This can also refer to a simple slip of bamboo for taking notes or writing a letter (especially in Korean Hanja).

Technically this is a word meaning simplicity and brevity in Japanese but it's rarely used in modern Japanese. Therefore, you should probably only select this character if your audience is Chinese.

See Also:  Brevity

精神 is the kind of spirit you have if you perform well in sports or competitions. It is the idea of having a good attitude and putting your all into something - so much so that others can see or feel your spirit. It is the essence of your being that can only be subjectively described because there are no words that can fully explain what “spirit” really is.

For your information:
My Japanese dictionary further tries to explain this word by comparing it to mind, soul, heart, or intention.
My Chinese dictionary compares these characters to meanings like vigor, vitality, drive, and mentality.
My Korean dictionary defines this as mind, spirit, and soul.

See Also:  Vitality | Heart | Soul

精神武道 is the Japanese martial arts title, Seishin Budo.

The first two characters, 精神, can mean vigor, vitality, drive, spiritual, mind, spirit, soul, heart, ethos, attitude, mentality, will, intention, essence, and fundamental significance.

The last two characters, 武道, are the Japanese word for martial arts (literally the Martial Way). This title can also be romanized as Seshin Budou or Seishin Budō.

剛完流 is the title of the Gokan-Ryu or “Go Kan Ryu” martial art.

修行館 is shugyō-kan or shugyou-kan in Japanese.

精神武道館 is the title Seishin Budokan in Japanese Kanji.

剛柔館 is the martial arts style Gojukan or Goju-Kan.

The meaning is “hardness [and] softness hall.”

剛 = Hard, firm, or strong.
柔 = Soft, softness, flexible, supple, yielding, gentleness, or pliant.
館 = Hall, building, school room, or an alternate word for a dojo.

沖縄剛柔館 is the martial arts style Okinawan Gojukan or Okinawan Goju-Kan.

The meaning is “Okinawa hardness [and] softness hall.”

沖縄 = Okinawa.
剛 = Hard, firm, or strong.
柔 = Soft, softness, flexible, supple, yielding, gentleness, or pliant.
館 = Hall, building, school room, or an alternate word for a dojo.

This is the Japanese martial arts school, “Kenshin-Kan” or “Ken Shin Kan” in Kanji.

聖心会 is the Japanese martial arts title “Seishinkai” or “Seishin-Kai.”

It literally means “Sacred Heart Association” or “Pure-Heart Club.”

聖 can mean holy, sacred, saint, sage, virtuous, expert, wise and good, upright, or correct.
心 can mean heart, mind, center, core, spirit, soul, or vitality.

聖心 creates a word meaning sacred heart, or the holy mind (that of Buddha).
会 in Japanese means association, club, meeting, assembly, party, gathering, conference, athletic meet, or society.