【Absolutely, Do Not Do This With Your Partner】 21-Type Relationship Diagnosis "Koi Bug Diagnosis" Released on May 12. Visualizes Risks of Infidelity and Sexless Relationships.

“Why was I so in love, but now I'm in so much pain?”

LOVE BUG LAB will officially release its web diagnostic service "Koi Bug Diagnosis (LOVE BUG TYPE)", inspired by brain function and attachment patterns, on Tuesday, May 12, 2026.

URL: https://lovebugtype.com/

Service Overview

It might not be your personality, but a "bug" in your brain.

"Koi Bug Diagnosis" is a web diagnostic service that visualizes relationship discrepancies and behavioral patterns as "bugs" hidden in the brain.

Many people experience the phenomenon of "knowing what to do in their heads, but somehow repeating the same mistakes."

This service interprets this not as a matter of good or bad personality, but as a "structural error in relationships" that is prone to occur due to attachment patterns and behavioral tendencies.

Users are categorized into 21 unique, slightly edgy alien characters, allowing them to objectively view their own relationship habits that they may not have noticed before.

Three Main Features

1. "Trouble Maker," "Evaporation Habitual Offender" — 21 "Bug Types" that hit the core

A part of the bug types. All 21 types have different characters and diagnostic names set.

The diagnostic results use slightly painful and humorous names instead of common gentle type names.

"Heavy Spender Love Addict" "Love Runaway Train" "Looks Normal, But a Landmine" "Clingy Love Brain"

We have prepared 21 types that will make you think, "That might be me." Each type comes with original illustrations and shareable cards for social media, designed for users to enjoy their diagnostic results with friends and on social media.

2. Enjoy casually or deeply with a 15-question light version and a 40-question full diagnosis

Koi Bug Diagnosis offers a casual 15-question light version and a more in-depth 40-question full diagnosis to analyze your relationship tendencies more deeply.

The light version is designed as an easy entry point for quick enjoyment, while the full diagnosis is designed as a deep dive experience to learn more about your relationship patterns.

3. Create a "user manual" without your partner knowing. A one-sided diagnosis that doesn't require partner cooperation.

Koi Bug Diagnosis's compatibility analysis does not require the cooperation of your partner.

By simply answering 40 questions about your partner based on their usual words and actions, how they reply to LINE messages, their reactions during arguments, etc., you can estimate their Koi Bug type and analyze the compatibility between the two of you.

In other words, there's no need to ask your partner to "do this" or to view the results together. You alone can secretly create your partner's "user manual."

The analysis visualizes the following items (some are paid):

Points where misunderstandings are likely to occur

Sexless risk

Infidelity risk

Actions that tend to cause anxiety to your partner

Concrete measures to continue the relationship

Why do we recommend *not* doing it together? Because it may reveal true feelings and anxieties that your partner might be reluctant to show in front of you, such as dependency tendencies, infidelity risks, and misunderstandings leading to sexless relationships. First, secretly obtain a "strategy guide" alone and devise countermeasures calmly without becoming emotional. That is the first step in a calm strategy meeting to mend a relationship that has gone astray.

What Koi Bug Diagnosis aims for is a strategy meeting not on "how to break up" but on "how to continue."

It's not just about good or bad compatibility, but why do the two of you misunderstand each other? How can you face each other a little better?

It organizes that structure and provides concrete hints for continuing the relationship.

Background of Development: From "Blaming Each Other" to "Strategizing" in Love

“Why does that person act that way?” Relationship problems often escalate into endless blaming, attributing the cause to "the other person's personality."

But what if you knew that the true nature of it was a "brain habit (bug)"? Transforming "that person is bad" into "this person's love bug is currently throwing this kind of error." By understanding the other person's specifications and having each other's user manuals, there should be relationships that can be saved.

Koi Bug Diagnosis was born as a tool to laugh off relationship malfunctions and positively "strategize" them.

Caution

This service is designed with reference to academic frameworks such as attachment theory, but it is purely for entertainment purposes. It is not a substitute for medical or psychological diagnosis, treatment, or professional counseling.

Service Details

Service Name: Koi Bug Diagnosis (LOVE BUG TYPE)

URL: https://lovebugtype.com/

Release Date: May 12, 2026

Usage Fee: Basic diagnosis Free / Additional detailed report 490 JPY (tax included) *Compatibility diagnosis report usually 5