In Redundancy, they say that she have multiple children but don't know their father. Did she sleep around ? WHY?! Is there something telling more info in the WN ? If yes, lease tell me which volume and some words so i can search back in the WHOLE volume. Can also someone tell me which volume he finds back Sylphy and Roxy ?
In chapter 24-2 Rudeus mentions that Ariel had kids so that no one (male concubine) would have too much power. He finds Sylphy again in Vol 7 or 9, depending on how you count. He runs into Roxy again in Vol 13.
For ariel, its mostly due to her not wanting the guy to gain too much power. It is stated that luke might be the father in 1 of the child. Its only mentioned in 1 or 2 paragraph. Around the last volume i think And the vol rudeus found sylphy is on young men arc. B4 the marriage arc but aft the school arc. Sry idk the number but it should be around arc ~14
Sylphy - found out about she crossdressing during school arc https://www.baka-tsuki.org/project/index.php?title=Mushoku_Tensei:Volume_09 married - https://www.baka-tsuki.org/project/index.php?title=Mushoku_Tensei:Volume_10 Roxy - meet again during dungeon rush to save his mother and rape rudy - https://www.baka-tsuki.org/project/index.php?title=Mushoku_Tensei:Volume_13 Ariel - meet again as he call for her help to fight Orteas - https://www.baka-tsuki.org/project/index.php?title=Mushoku_Tensei:Volume_16
Rudy was kinda in despair at that time. Spoiler His father dead in front of him, his mother was kinda become robot. and he lost one of his arm. Elinaliza(Sylphy mother) told Roxy to do it with Rudy to cheer him up