User blog comment:B214/High School DxD EX/@comment-25262334-20150828022642

Confirmed informations about children:

Kurenai - is 18 years old son of Akeno.

Zen - is 17 years old son of Xenovia.

Ixis - is 15-16 years old son of Rias.

Shirayuki - is 12-13 years old daughter of Koneko.

Kuroibara - is 12-13 years old daughter of Kuroka.

Future status of characters after 30 years:

Issei → Becomes super-celebrity as a hero which made him continuously busy for the next 200 years, not having enough time even for his wife and children.

Rias → Currently still unknown.

Asia → Fallen into a deep sleep after being cursed by Loki. Becoming more and more weak with each passing day.

Akeno → Becomes Executive of Grigori.

Koneko → Currently still unknown.

Kiba → Is now Ixis' swordmaster. Issei's children likes him more than Issei himself.

Xenovia → Becomes representative of children that aims at top universities in the underworld. Her personality turns into total "education mom".

Gasper → His personality changes and he becomes very scary guy whom Ixis fears. His time stopping ability evolves into complete time control.

Irina → Every day is very busy in heaven. So when she arrives home she immediately falls asleep.

Rossweisse → Currently still unknown.