Now that summer break is upon them, the trio try to come up with a plan.
Koizumi-san already has an answer for that, which is to travel all over the nation.
Koizumi-san is finally going nationwide?!
made its way all over the country, 
undergoing all sorts of evolutions.
.وقد خضع لتطوّرات عدّة
haben sich in zahlreiche Sorten
weiterentwickelt und landesweit verbreitet.
con toda clase de evoluciones.
con toda clase de evoluciones.
changea de forme
et se répandit dans tout le pays.
si sono diffusi in tutto il Paese
evolvendosi in diverse forme,
e sofreu uma série de evoluções.
и везде его готовили по-разному.