Day 15 concludes Chapter 10, The Teacher of the Dharma, and opens Chapter 11, Beholding the Stūpa of Treasures.

Having last month concluded Chapter 10, The Teacher of the Dharma, we behold the Stupa of Treasures.

Thereupon a stupa of the seven treasures sprang up from underground and hung in the sky before the Buddha. The stupa was five hundred yojanas high and two hundred and fifty yojanas wide and deep. lt was adorned with various treasures. It was furnished with five thousand railings and ten million chambers. It was adorned with innumerable banners and streamers, from which jeweled necklaces and billions of jeweled bells were hanging down. The fragrance of tamalapattra and candana was sent forth from the four sides of the stupa to all the corners of the world. Many canopies, adorned with streamers, and made of the seven treasures-gold, silver, lapis lazuli, shell, agate, pearl and ruby were hanging in the sky [one upon another from the top of the stupa] up to the [heaven of the] palaces of the four heavenly-kings. The thirty-three gods offered a rain of heavenly mandārava-flowers to the stupa of treasures. Thousands of billions of living beings, including the other gods, dragons, yakṣas, gandharvas, asuras, garuḍas, kiṃnaras, mahoragas, men and nonhuman beings, also offered flowers, incense, necklaces, streamers, canopies and music to the stupa of treasures, venerated the stupa, honored it, and praised it.

Lotus World offers this on the arrival of the Stupa of Treasures:

The jeweled stupa arising from the earth represents the emergence of Buddhahood (the stupa) from the ground of Buddha-nature in people’s ordinary lives (the earth). The transformation of this world is a graphic reminder that this world is the real pure land where enlightenment actually occurs. The recall of the emanated Buddhas from the pure lands reveals that these idealized Buddhas are personifications of the enlightened qualities and inner life of the historical Shakyamuni Buddha. The image of Many Treasures Tathagata and Shakyamuni Buddha seated together symbolizes the unity of the true reality of life and the wisdom of the person who awakens to reality.Lotus World: An Illustrated Guide to the Gohonzon

Day 14 covers all of Chapter 9, The Assurance of Future Buddhahood of the Śrāvakas Who Have Something More to Learn and the Śrāvakas Who Have Nothing More to Learn, and opens Chapter 10, The Teacher of the Dharma.

Having last month heard that anyone who rejoices, even on a moment’s thought, at hearing even a gāthā or a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma will attain Anuttara-samyak-saṃbodhi, we continue with the explanation of the Buddha’s messengers.

“Medicine-King! lf anyone asks you who will become a Buddha in his future life, answer that such a person as previously stated will! Why is that? The good men or women who keep, read, recite, expound and copy even a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma, and offer flowers, incense, necklaces, incense powder, incense applicable to the skin, incense to burn, canopies, banners, streamers, garments and music to a copy of this sūtra, or just join their hands together respectfully towards it, should be respected by all the people of the world. All the people of the world should make the same offerings to them as they do to me. Know this! These good men or women are great Bodhisattvas. They should be considered to have appeared in this world by their vow to expound the Sūtra of the Lotus Flower of the Wonderful Dharma out of their compassion towards all living beings, although they already attained Anuttara-samyak-saṃbodhi [in their previous existence]. Needless to say, those who keep all the passages of this sūtra and make various offerings to this sūtra [are great Bodhisattvas]. Medicine King, know this! They should be considered to have given up the rewards of their pure karmas and appeared in the evil world after my extinction in order to expound this sūtra out of their compassion towards all living beings. The good men or women who expound even a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma even to one person even in secret after my extinction, know this, are my messengers. They are dispatched by me. They do my work. It is needless to say this of those who expound this sūtra to many people in a great multitude.

The Daily Dharama from July 24, 2017, offers this:

The good men or women who expound even a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma even to one person even in secret after my extinction, know this, are my messengers. They are dispatched by me.

Day 13 covers all of Chapter 8, The Assurance of Future Buddhahood of the Five Hundred Disciples.

Having last month heard Śākyamuni praise Pūrṇa as the most excellent expounder of the Dharma, we learn of Pūrṇa’s future.

“Bhikṣus! Pūrṇa was the most excellent expounder of the Dharma under the seven Buddhas. He is the same under me. He will be the same under the future Buddhas of this Kalpa of Sages. He will protect the teachings of those Buddhas and help them propagate their teachings. After the end of this kalpa also he will protect the teachings of innumerable Buddhas, help them propagate their teachings, teach and benefit innumerable living beings, and cause them to aspire for Anuttara-samyak-saṃbodhi. He will always make efforts to teach all living beings strenuously so that the worlds of those Buddhas may be purified. He will perform the Way of Bodhisattvas step by step for innumerable, asaṃkhya kalpas, and then attain Anuttara-samyak-saṃbodhi in this world. He will be called Dharma-Brightness, the Tathāgata, the Deserver of Offerings, the Perfectly Enlightened One, the Man of Wisdom and Practice, the Well-Gone, the Knower of the World, the Unsurpassed Man, the Controller of Men, the Teacher of Gods and Men, the Buddha, the World-Honored One. The world of that Buddha will be composed of one thousand million Sumeru-worlds, that is, as many Sumeru-worlds as there are sands in the River Ganges. The ground [of that world] will be made of the seven treasures. It will be as even as the palm of a hand. There will be no mountains nor ravines nor ditches. Tall buildings adorned with the seven treasures will be seen everywhere in that world, and the palaces of gods of that world will hang so low in the sky that gods and men will be able to see each other. There will be no evil regions nor women. The living beings of that world will be born without any medium. They will have no sexual desire. They will have great supernatural powers, emit light from their bodies, and fly about at will. They will be resolute in mind, strenuous, and wise. They will be golden in color, and adorned with the thirty-two marks. They will feed on two things: the delight in the Dharma, and the delight in dhyāna. There will be innumerable, asaṃkhya Bodhisattvas, that is, thousands of billions of nayutas of Bodhisattvas. They will have great supernatural powers and the four kinds of unhindered eloquence. They will teach the living beings of that world. There will also be uncountable Śrāvakas there. They will have the six supernatural powers including the three major supernatural powers, and the eight emancipations. The world of that Buddha will be adorned with those innumerable merits. The kalpa [in which Pūrṇa will become that Buddha] will be called Treasure­Brightness; and his world, Good-Purity. The duration of the life of that Buddha will be innumerable, asaṃkhya kalpas, and his teachings will be preserved for a long time. After his extinction, stupas of the seven treasures will be erected [in his honor] throughout that world.”

Underscrore “He will always make efforts to teach all living beings strenuously so that the worlds of those Buddhas may be purified. He will perform the Way of Bodhisattvas step by step for innumerable, asaṃkhya kalpas, and then attain Anuttara-samyak-saṃbodhi in this world.”