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Wonderful sports day / athletic festival

Let your individuality shine! Recommended back-name ideas for class T-shirts at the sports festival

In the lead-up to sports day, it’s common for classes and friends to get matching T-shirts, right?

What kind of words do you put on the back of those T-shirts?

In this article, we’ve gathered recommended phrases for the back of sports day T-shirts—what we call “back names.”

We’ll introduce them in four categories: nicknames/titles, self-deprecating jokes, phrases that form a single saying when two or more people stand together, names of your faves, and famous quotes.

Find your favorite back-name phrase and make it a sports day to remember!

Put in your oshi (1–10)

I like 〇〇 too much.

I like 〇〇 too much.

These are phrases that express love for your favorite things or your biases in plain, straightforward words.

When promoting your fave, people often use punchy, impactful lines, but by deliberately choosing simple, direct wording, you can also set yourself apart.

Endings like “-too much” are an important touch, conveying a feeling that your emotions are overflowing and can’t be contained.

Precisely because the words are simple, these phrases seem to express both a straightforward affection and the intensity of your feelings.

___ is oxygen.

___ is oxygen.

It’s a unique phrase that contrasts oxygen—essential for human life—with something you love or your favorite idol.

By likening your favorite to oxygen, it strongly emphasizes that they’re indispensable for your life.

Oxygen is not only vital for survival but also something that’s always around us, so the phrase conveys that it blends into everyday life.

It lets you express, in simple yet powerful words, that something is important to you and essential to your daily life.

Only 〇〇 for the win.

Only 〇〇 for the win.

It’s a classic phrase used by idol fans to passionately declare that what you love—your oshi—is the absolute best.

While it spread as something fans say to support idols, the meaning of “this is the best” has broadened, so people now use it to hype up anything they personally love, not just people.

It works well when you’ve got the spotlight and want to promote your favorite idol or thing, and it can also be used to showcase group unity by putting the group’s name front and center.

By broadcasting what you consider the best, you amplify your feelings for it—this phrase really conveys a powerful sense of devotion.

someone’s wife (informal); 〇〇’s wife/“waifu” (context-dependent, can also mean a favorite female character)

someone’s wife (informal); 〇〇’s wife/“waifu” (context-dependent, can also mean a favorite female character)

It’s a classic phrase for hyping up your favorite person or thing, one that expresses feelings so strong you’d want to spend a lifetime together.

It’s short, but it’s packed with deep affection and powerful emotion.

Beyond just showing what you like or who you stan, it’s also a phrase you can use to express bonds with your teammates or friends.

By using words that strongly convey love to express how you feel about your group, you can communicate the strength of your trust and connections to those around you.

Add your oshi (11–20)

Name of your favorite tea

The idea of putting the name of your favorite tea as the name on the back of a class T-shirt is a stylish, playful, and distinctive naming choice.

Whether it’s black tea, barley tea, jasmine tea, or gyokuro, the tea you choose naturally brings out a different character.

You can match with close friends or each go your own way to show individuality—either way, it draws people’s interest and is sure to get a chuckle.

Why not grab attention with a soothing, comforting back name that lets you be someone who helps others take a breather—just like a good cup of tea?

Famous Lines (11–20)

Lastly, here are some ideas for name tags using famous quotes.

There are plenty of memorable lines from manga, anime, movies, and dramas that really strike a chord with viewers.

We’ve picked out a few of those iconic quotes.

They’re all words that will give you an extra boost to do your best at the sports festival.

Besides the ones we introduced, if you have words that usually give you courage, we recommend using those too.

Let words give you courage, and take on the events with all your effort!

Famous Quotes (1–10)

It’s okay. I’m the strongest.

It's okay. I'm the strongest.

If you put “Don’t worry, I’m the strongest” on the back of your class T-shirt, it’ll make for an impactful back name that radiates overwhelming confidence and composure.

It’s a famous line from Satoru Gojo, the strongest character in the manga Jujutsu Kaisen, expressing both his reassuring presence and firm belief in his own strength in a single phrase.

Whether for competition or cheering, it’s a straightforward way to say “Leave it to me!” and is sure to catch people’s attention.

A perfect blend of humor and coolness, it’ll be an ideal pick for a sports festival.

Enjoy dawdling—by all means.

Enjoy dawdling—by all means.

If you put “Savor the detours.

To the fullest.” on your class T-shirt for the sports festival, it becomes a line that conveys the composure and depth to not only aim for victory but also enjoy the journey itself.

Known as a famous quote by Ging Freecss from the manga HUNTER×HUNTER, this phrase carries the message that detours and roundabout paths on the way to a goal become irreplaceable experiences.

It’s a stylish back-name that wordlessly tells others you’ll throw yourself into everything—events, cheering, even preparations—as part of those ‘detours,’ and enjoy it all to the fullest.