https://mao.5ch.net/test/read.cgi/pet/1611014196/42 2021/01/22(金) 15:23:18.71 ID:kxgub1TE0
>>34
参考になるかも・・・
https://yokohamabirdclinic.jp/estrus/
https://twitter.com/kazuebisawa/status/1302746294474031104
https://twitter.com/kazuebisawa/status/1279536542168449024
https://twitter.com/5chan_nel (5ch newer account)