Given the dating/harem genre of the game, dealing with the characters' past relationships is unavoidable. So far, most of the past relationships in the game are only vaguely/subtly implied, and only in the few cases (such Aegir's with Valiant Mermaid as Ran) that the past lovers appear in game. The following are the characters that have (ex-)lovers in various mythologies (some might be missing from the list), and how they're written in the game, with some still require various events' official translation to confirm.

• Aegir - Explicitly married to Ran like in the mythology but their relationship was deconstructed into Ran fearing eternity ending and Aegir leaving her.
• Babalon - Not married to Samael like in the mythology?
• Balor - Was married to Caitlín.
• Dagon - Married to Mother Hydra?
• Daikoku/Onamuji/Okuninushi - Married a lot of women (Suseribime,Nunakawahime) like in mythology but is sorta implied that his one true love is Susanoo.
• Echo - Was in love with Narcissus but had since moved on.
• Fenrir - Summoned before he fathered Skoll and Hati?
• Fuxi - Couple relationship is removed, but siscon tendency still remains.
• Gyumao - Married to Princess Iron Fan?
• Hakumen - Was probably a consort to various emperors during her time as Daji and Lady Kayo.
• Heracles - Summoned after he killed his wife Megara and their children due to Hera's curse. Was once in love with Hylas.
• Hermes - Summoned before he fathered various children?
• Hephaestus - Probably married to Aphrodite in name the same way as the mythology.
• Ibaraki - Married to Shuten in some myths. Potential lover?
• MacRoich - Was married to Medb and was friend with Setanta (or more than that?).
• Masanori - Married to Hinaginu before her death.
• Melusine - Used to have a relationship like in mythology?
• Ophion - Married Eurynome before her banishment.
• Perun - Wife(wives?) doesn't exist in this version? Veles seems to be his one true love.
• Pollux - Not exactly mentioned but was probably a womanizer like in the mythology prior to Castor's death.
• Sarutahiko - Summoned before he married Ame-no-Uzume?
• Shino - Was in love with Fusehime
• Shuten - Married to Ibaraki in some myths. Potential lover?
• Shiva - Summoned before his destined marriage with Parvati. Did he forget about her past life as Sati?
• Smoky God - Married Yasodhara but ran away from home?
• Suzuka - Was in love with Sakanoue no Tamuramaro, but parted on really bad term like the tragic version of their tale.
• Tangaroa - Original Tangaroa was married to Te Anu-matao?
• Tangaroa Infinity (Kanaloa?) - Married in some myths but is in love with his best friend and potential Exile Kane here?
• Takemaru - Was briefly in love with Suzuka?
• Taishakuten - Not sure if he is supposed to have some traits of Sakra (married to Asura's daughter Suja?).
• Teda - Going by the Sun God's Bride tale, he was married to a patron goddess of Irabu Island and Nirai Kanai's potential Exile.
• Temujin - Should have a lot of wives and concubines like in history, but his one true love is Jamurkha.
• Typhon - Summoned before his marriage to Echidna?
• Triton - Summoned before his marriage to Libya?
• Yamasachihiko - Toyotamahime doesn't exist? Was Otohime's lover?
• Yoritomo - Probably had wife and concubines like in history but was (and still is) obsessed with Yoshitsune?

Overall, I think Lifewonders does a very good job in balancing between the original myths and their own interpretation. What do you think?