@SINderella Black Death is caused by the Yersinia pestis bacteria and is primarily transmitted by fleas, not water. Swimming in the immediate vicinity of a corpse, especially with an open wound, would carry a risk of infection, but generally the bacteria will not grow and spread in such an...
Just a note about page 4 and the "blood thickness". What she actually says is "The concentration of Minoru-kun in the air is too high inside the tent. My body's cells will become over-activated." Over-activated in the sense of overloading a device with too much electricity.
He should have just built the houses and rented them (which was how actual medieval societies worked) or sold them with mortgages to let the new residents pay them back gradually with interest. No need to subsidize anything, and employment is strong, so everyone wins. Rents and loans are also...