A science student transmigrates into newborn Naruto Uzumaki and unexpectedly obtains the Plants vs. Zombies System. A lover of experimentation, he uses his infant status and the cover of the Nine-Tails' chakra to secretly cultivate Peashooters, Wall-nuts, and other plants in hidden corners of Konoha, even covertly researching zombie conversion techniques. Early on, he applies his scientific knowledge to improve the plants and uses Sun Collectors to convert chakra, carrying out all kinds of "little experiments" without anyone noticing. In the middle stages, he uses missions as an excuse to deploy mutated plants on the edges of battlefields, giving the shinobi world its first glimpse of Wall-nut defenses that ignore ninjutsu and Homing Thistles that track chakra. Later, he publicly cultivates Bloodline Limit plants infused with chakra natures, along with zombie armies capable of devouring ninjutsu, completely overturning the shinobi world's rules of combat. As the Five Great Nations are swept up in the flood of "plants and zombies," they are forced to reassess the man they once called the "Demon Fox's Vessel." There is a connection, but not much of one.
The author is so great, so I gave it five stars and asked if the author still persists.