this is my way of keeping yukkuri systematically. i spread 4 bed,food and toilet to 4 corner to let yukkuris population spread around the yukkrium and not cramping on one place, money spent on this shit is like 300 million>. i have been running this yukkurium on afk for 4 weeks and there has been some mass extinction and strange shit like every yukkuri has died except a dosu.