u/Aromatic_Shallot_101

Hello everyone! (Asked the mods’ permission to post this)

I'm writing a thriller/mystery story that takes place in Japan, in the year 2019. 17 year-old Reiji with no memory of his early childhood, was placed in foster care ever since he was 4, struggles with his grief over his mentally unstable mother's death and his identity from switching houses constantly and in turn, changing his personality to suit his foster parents’ needs. One day, his father Takumi is discharged from the hospital (due to the mother) and takes the amnesiac Reiji back home. No matter how many photos Takumi shows him or food he cooks, Reiji is unable to adjust to his new life. However, Takumi begins to exhibit strange behavior that seems to stem from a traumatic memory involving Reiji, and things take a terrifying turn after Reiji finds evidence of Takumi’s affair. 
 
The names I have are...
Asano Reiji - 浅野 零児 (Son, 17 years old. 18 by the end of the story)
Asano Takumi - 浅野 匠 (Father, 43 years old)
Asano Tomoko - 浅野 智子 (Mother, 38 years old)
Kariya Misaki - 仮屋 美咲 (Takumi’s affair, mid 30s)
Kariya Yuuto - 仮屋 結翔 (Takumi’s illegitimate son, 4-6 y/o)
Tetsuya - 哲也 (Spoiler. Early 50s)

My main question is whether these names are believable and realistic, alongside accurate to their era so that old people don’t have young people names and whatnot. (although in the thriller/mystery world, names do get a bit unique). Basically, I’m hoping they’re not stereotypical/weird like “Gertrude Wizzbobble” hahaha

I picked them all due to their meaning and I can’t explain some due to spoiler reasons, but I’m hoping to keep the Kariya surname and the name Takumi. 

Thank you so much!