in case anyone is wondering like me, its in chapter 36 when laius is talking to kabru about eating living armor, that the dungeon cleaners restored the lion head emblem on his sword
you can see the restored lion head in chapter 37 when they are fighting
also the young beardless senshi is only 10 years younger than he is right now, i dont know about dwarvern physiology, but if the that beardless senshi is dwarvern teenager, senshi right now is only just an adult, he is younger than he looks