User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170325134915/@comment-30924344-20170326002300

Well I'm free now. Just finished rewatching Clannad After Story for the first time. Bloody amazing show, it's my favourite anime. Anyways here are the relative Issei will gain when he marries the girls:

Confirmed:

Akeno's family-Barqiel {Father-in-law}, Tobio {Second cousin-in-law}, Suzaku {Cousin-in-law}, Unnamed Grandmother {Grandmother-in-law}, Sou {Great-uncle-in-law}.

Rias' + Grayfia's + Venelana's and Sairaorg's family-Zeoticus {Father-in-law}, Venelana {Mother-in-law}, Millicas {Nephew-in-law}, Grayfia {Sister-in-law}, Sirzechs {Brother-in-law}, Zekram {Ancenstor-in-law}, Sairaorg {Cousin-in-law}, Misla {Aunt-in-law}, Euclid {Brother-in-law}, Magdaran {Cousin-in-law}, Lord Bael {Uncle-in-law}.

Le Fay's family-Arthur {Brother-in-law}, Elaine {Sister-in-law}She is most certainly going to marry Arthur}, Unnamed father and mother {Parents-in-law}.

Irina's family-Touji {Father-in-law}, Unnamed mother-in-law.

Rossweisse's family-Unnamed parents-in-law, Unnamed cousin-in-law, Gondul {Grandmother-in-law}

Asia's family-Unnamed parents-in-law.

Xenovia-Griselda {Sister-in-law}

Koneko and Kuroka-Both sister-in-laws to Issei