日蓮 is the title Nichiren.

This title refers to a Buddhist priest who lived from 1222 to 1282. He is the founder of the Nichiren sect of Buddhism.
According to historical documents, the Nichiren sect was established in 1252. Adding the character 宗 for sect, this would be 日蓮宗 (Nichiren sect), which is also known as the 法華宗 or Lotus sect.

According to Soothill-Hodous...
Nichiren's chief tenets are the three great mysteries 三大祕法, representing the trikāya:
1. 本尊 or chief object of worship, being the great maṇḍala of the worlds of the ten directions, or universe, i.e., the body or nirmāṇakāya of Buddha.
2. 題目 the title of the Lotus Sutra 妙法蓮華經 Myo-ho-ren-ge-kyo, preceded by Namo, or “Adoration to the scripture of the lotus of the wonderful law,” for it is Buddha's spiritual body.
3. 戒壇 the altar of the law, which is also the title of the Lotus as above; the believer, wherever he is, dwells in the Pure-land of calm light 寂光淨土, the saṃbhogakāya.

南無妙法蓮華經 is sometimes translated as the “Devotion to the Law of the Lotus Flower Scripture.”

This is a meditation chant and homage to the Lotus Sutra, used by Nichiren Buddhists in Japan.
This is also a chant used in China by certain sects of Buddhism that celebrate the deity Guanyin.

Also romanized as “Nam Myōhō Renge Kyō” or without accents as “Nam Myoho Renge Kyo.”

Modern
Japanese
Variant

Original
Traditional
Version

The last character was originally written as seen on the left. Sometimes, you will see it written in the Japanese variant form as shown on the right. If you want this Japanese variant, click on the "Modern Japanese Variant" text instead of the button up by the main title of this entry.