What Is Sai-Oshi (Kami-Oshi)? Your Number One Oshi, Number Two and Everyone Else

You like several people, and when someone asks “Who’s your number one?” you hesitate. Here’s what sai-oshi and kami-oshi mean, where the words come from, how they differ from other words for ways of loving, and how they’re used in profiles.

What Sai-Oshi and Kami-Oshi Mean

Sai-oshi (最推し) and kami-oshi (神推し) mean “your number one oshi” among several. The runner-up is ni-oshi (“second oshi”), followed by san-oshi (“third oshi”) and so on.

1. 01Sai-oshi / kami-oshiYour number one
2. 02Ni-oshiSecond place
3. 03San-oshiThird place, and so on

Rankings are a game with your own feelings, and they can change.

Where the Two Words Come From, and the Generational Feel

Kami-oshi is the older word, in use since the idol venues of the 2000s. It adds “kami” (god) as a superlative to mark a difference in rank from your other oshi. Sai-oshi is newer and spread in the social media age, along with the emphatic “sai-” (“most”) prefix. The meanings are nearly the same, but “kami-oshi” carries the air of idol venues and “sai-oshi” the air of social media, and which one you use can faintly show how long you’ve been at this. Today sai-oshi is the more common.

Examples

• “I’ve decided to celebrate my sai-oshi’s birthday slowly every year.”
• “I’m hako-oshi, but if I had to say, my kami-oshi is X.”
• “My ni-oshi is so precious that my sai-oshi spot is wobbling.”
• “For introductions, I always say: my sai-oshi is X, my ni-oshi is Y, but I love the whole group.”

“My sai-oshi spot is wobbling,” as in the third example, is a standard expression too. Rankings aren’t fixed, and this vocabulary is meant to let you enjoy the wobbling as well.

The Vocabulary for How You Line Up Your Oshi

Some people resist ranking their oshi, but ranking doesn’t mean your love is shallow. It’s a game that sharpens the resolution of your own feelings. Try putting into words why this person is your sai-oshi and you begin to see your own sweet spots.

Your oshi lineupWords for how you arrange them

• Sai-oshi / kami-oshiYour number one
• Ni-oshi, san-oshiSecond and third place
• Tan-oshiOnly one person to begin with
• Hako-oshiThe whole group, no ranking
• DDSeveral groups, broadly

The Moment Your Number One Is Decided

You often hear that a sai-oshi isn’t something you pick on purpose; you notice it afterward. The common triggers boil down to these four:

1. Your eyes keep following them. In group photos and videos, you catch yourself looking for the same person without meaning to
2. You suddenly talk about them a lot. Your explanations get long when they come up. The volume of oshi-gatari (oshi talk) doesn’t lie
3. The way you make plans changes. You find yourself pushing to get time off just for the days they appear
4. Something feels missing when they’re not there. When you watch a show they aren’t in, your ranking quietly settles inside you

All of these are closer to noticing than deciding. That’s why a sai-oshi shows up in your behavior before you declare it.

1. 01Eyes followYou look for the same face
2. 02You talk moreYour explanations get long
3. 03Plans changeYou take time off for them
4. 04You miss themA show without them feels thin

Closer to noticing than to deciding.

A Checklist: Measuring Your Sai-Oshi by Behavior

If you’re unsure, count by what you’ve actually done over the past month. The person with the most checks is probably your sai-oshi.

• The face you look for first when you open a group photo
• The person you cry out for when they turn up in random goods
• The person you felt was missing when you watched a show they weren’t in
• The person whose birthday is on your calendar
• The person you took time off to match the schedule of
• The person you talk about the longest when you spread the word (fukyo) to friends

Rankings aren’t fixed. If you count again six months later and the order has changed, that’s part of the fun of this game.

The Profile as a “Business Card”

Writing “Sai-oshi: X” in your social media profile is the standard stand-in for a business card in the kaiwai (fandom sphere). Stating your sai-oshi is practical for telling doutan (fans of the same oshi) from tatan (fans of others), for finding partners in merch trades and for opening a conversation on common ground.

In trades and handoffs, a shared understanding that “I can let go of merch that isn’t my sai-oshi” is often a premise of the deal, so stating a sai-oshi is also practical infrastructure.

Finding people

Doutan and tatan

• Tells fans of the same oshi from fans of others
• Opens shared topics

Doing deals

Trades and handoffs

• Finds trading partners
• Shares priorities such as letting go of other goods

Naming your sai-oshi is quiet practical infrastructure.

Common Misconceptions

• Everyone except your sai-oshi isn’t an “afterthought.” Love for your ni-oshi and san-oshi is real too. Rankings don’t divide up a fixed amount of love; separate kinds of liking simply sit side by side
• Changing your sai-oshi isn’t betrayal. Oshi-hen is a natural movement of feeling. A culture open enough that you can say “I’m new here” is what keeps oshi-katsu healthy
• Asking someone’s sai-oshi isn’t bad manners. But they may not have decided, or may not want to say, so the grown-up way is not to press for an answer

Notes From The Oshi Lab: Sales of Individual Merch Are a Survey of “Sai-Oshi Share”

The concept of the sai-oshi mirrors the priorities in fan spending. When budgets are limited, fans buy in order, starting with whatever is tied to their sai-oshi. So the sales distribution of member-specific merch doubles as survey data on the “sai-oshi share” within a fandom. From the organizers’ side, it’s healthier to use this data as material for designing individual projects than to use it to visualize a popularity gap.

The Lab would add the market meaning of the “ni-oshi and san-oshi” vocabulary itself. Fans’ interest isn’t concentrated on one point; it’s spread out as a ranked portfolio. Offering a staircase of price and enthusiasm, with deep projects for sai-oshi fans and lighter ones within reach of ni-oshi and san-oshi fans, widens participation across the whole fandom.

Related Terms

Tan-oshi / Hako-oshi / DD / Oshi