In the light novel sequels to 僕の心のヤバイやつ (The Dangers in My Heart aka BokuYaba), Ichikawa and Yamada marry very young (as she is pregnant) and start what is to be a large family of five children. Ichikawa realizes that it is up to his and Yamada’s generation to save the Japanese people from literal extinction, so he starts a right-wing, nativeist, and pro-natal party “Japan Rebirth” while still in college. Yamada Anna uses her star power to help convince young Japanese that having lots of children early is cool and fashionable, and the new party grows quickly funded in part by sales of their light-hearted joint memoir of young parenthood “Our Struggle”. Young people hear the call, and mobs storm the capital, demanding the overthrow of the female-jew-written Constitution. After a power struggle on the floor of the Diet, Japan Rebirth seize control of the Government and begin a ruthless purge of their enemies. Finally the Emperor is forced to intervene and proclaim Ichikawa Kyotaro as Shōgun, the first since 1868. Japan is purged of jews and foreigners, with foreign visitors of approved backgrounds only allowed to stay via three-month work or tourism visas. The revived and cleansed nation comes to dominate East Asia in all areas of industry, politics, and culture.