Starting on June 8th, you'll see a cutscene with Naoki for the first time. After this event, you can find him at the first floor in the Learning Building (Main Building)
Talk to Naoki and back the next day to talk to him again. Repeat 3 times to start the social link.
Rank 2
Naoki: I usually eat here a lot because it's so close to our place, but for some reason, I haven't eaten here recently.
2: Tired of the food?
1: Too busy? *(Same points as above option if you have a hanged man persona)*
 
Naoki: I mean... what exactly is an "admirable life" anyway?
2: Making your parents happy.
4: I don't know. *(Same points as above)*
1: Contributing to society. *(Same points as previous 2 choices if you have a hanged man persona)*
Rank 3
*Naoki is laughing like he's having a good time..*
1: Ask him to tell another story.
3: Tell an American joke. *(Same points as above)*
2: Tell your own tale of failure. *(Same points as previous 2 choices if you have a hanged man persona)*
 
Naoki is biting his lip...
1: I'll go tell them off.
2: You not saying anything?
Rank 4
Naoki looks distressed...
1: Talk back to the lady. *(Requires LV 4 Courage)*
2: Flatter the lady. *(Requires LV 4 Expression --- Same points as above)*
3: Keep quiet. *(No points but only option if you don't have high enough courage or expression)*
 
Naoki: I'm sorry... It's a little awkward to be around me, huh?
1: It's not your fault.
Rank 5
Naoki: ...
1: That's a good idea.
 
Naoki: ... I have do it.
*Any*
Rank 6
Naoki: They got all suspicious of me suddenly. I wasn't expecting that at all.
*Any*
 
Naoki: Am I really that pitiable...?
2: You're not the only one.
3: I don't know what they mean. *(Same points as above if you have a hanged man persona)*
Rank 7
Naoki: I wanted to apologize for that.
1: I don't mind.
2: Last time? *(Same points as above if you have a hanged man persona)*
 
Naoki: How do I get out from that...? What would be best for me, for Sis...? I just don't know.
2: Take action.
Rank 8
Naoki: Ironic isn't it...?
*Any*
 
Naoki: Yosuke-san sure is nosy. Oh wait, so are you...
2: We can't just ignore you.
1: Don't lump me in with him. *(Same points as above if you have a hanged man persona)*
Rank 9
Naoki: Because I wasn't able to cry like the actors on TV. I thought that maybe I didn't actually like Sis...
*Any*
 
Naoki: She must've wanted to live more, huh?
*Any*
 
*Naoki is biting his lip...*
3: Just let it all out, Naoki. *(Requires LV 5 Understanding)*
2: She can hear you. *(One less point than previous but doesn't require understanding)*