|Kanji||湯川 英樹（ゆかわ ひでき）|
|Friends||Satsuki Sasahara (Girlfriend)|
|English||J. Michael Tatum|
Hideki has piercing blue eyes with dark green hair.
Hideki is very chill and does not get affected by Sasahara's confessions of love for he only thinks it's all a joke since she covers it up by telling him that, so he plays along for now. That was until their last night of star gazing together.
Hideki played baseball in Middle School.
Satuki is his girlfriend. He has always deeply cared for her and loved her, he just always felt like she didn't feel the same way considering she would always confess her love and then turn around and tell him it was a joke. Until episode 1 he told her to stop and tell him how she really feels about him.
- Hideki's hobby is cooking.