Chapter 021 – The Journey Continues

West Wind Academy is named after West Wind Brigade from Log Horizon, a guild mostly consisting of a guy and his harem of women.

Chapter 022 – West Wind Academy

Cixi is named after Empress Cixi, a hint to her power

Chapter 022 – West Wind Academy

Cixi's grey turtle shell is a reference to the Black Tortoise, the Chinese equivalent of Genbu

Chapter 023 – Serph

Serph's name is a reference to Serph of Digital Devil Saga, but is younger and with a brown top instead of a grey military uniform or mad scientist stuff.

Chapter 023 – Serph

Sherlock Holmes lives in Apartment 221 on Baker Street

Chapter 023 – Serph

Serph ending up in Akiza's bed saying "big sis" is what Negi in Mahou Sensei Negima does when he has to sleep in Asuna's room. It is gender swapped here.

Chapter 024 – Training Grounds (1)

Armatization is from Tales of Zestiria, the process in which a Shepard or Squire merges with their Spirit to get new equipment and abilities. Can also be a reference to Shaman King and Oversoul or Spirit Control. Same thing really.

Chapter 024 – Training Grounds(1)

Rising Phoenix and Burning Phoenix are both Artes (special skills) from the Tales series.

Chapter 024 – Training Grounds (1)

Akiza attacking the moment three is said is the same as what Akira did to her in their first training session.

Chapter 025 – Training Grounds (2)

Haman attacks at the count of two, just like Clinch Leatherwood in A Million Ways to Die in the West.

Chapter 025 – Training Grounds (2)

The Burning Phoenix is even a follow up attack just like in the Tales series.

Chapter 026 – The Immortal Realm (1)

The Immortal Realm is similar to the one that appears in Zui Wu Dao.

Chapter 026 – The Immortal Realm (1)

Master Pai Mei is the one that taught The Bride in Kill Bill.

Chapter 027 – The Immortal Realm (2)

Serph's Sonic Thrust is another skill taken from the Tales series.

Chapter 027 – The Immortal Realm (2)

Burying the Gate is something people do a lot of in the Stargate series to stop others from being able to open a passage way or go through it.

Chapter 028 – Survival

The ice wolf that they see is Fenrir.

Chapter 029 – Phoenix Form

Using the fog as a measurement of time or setting a schedule is something that is common in Persona 4.

Chapter 030 – Fierce Turtle

The turtle is a giant Squirtle. It even uses Bubble

Chapter 032 – Kongming

Kongming is another name for Zhuge Liang, a famous hermit and strategist.

Chapter 032 – Kongming

The idea that a different type of energy replaces a old one is common in Xianxia novels, you cannot read the power level of someone who uses a different type of energy. Similar to God Ki in Dragonball

Chapter 033 – The Stone House

Kongming's item fusion skill is from Dou Po Cang Qiong, better known as Battle Through the Heavens. It can also be considered like Transmutation without the need for an Alchemy Circle like Full Metal Alchemist.

Chapter 034 – Shinmei-Ryu

The sword technique is named after one of the schools from the Love Hina, Mahou Sensei Negima, and UQ Holder series.

Chapter 034.5 - Differences

Serph fights Gamera, a turtle known for spinning from the Godzilla series.

Chapter 036 – Akira vs Akiza (4)

The woman in purple's Elemental Strike resembles Freya's Ether Strike from Valkyrie Profile

Chapter 037 – Akira

Akira's real name is the same as the True Assassin from Fate/Zero.

Chapter 038 – Akiza's Feelings

"I am you and you are me" is a quote from Persona 4.

Chapter 039 – The Truth

Kongming's technique to unlock Serph's Divine Energy is similar to the one Jiraiya uses on Naruto to remove the seal placed around his Nine Tails Chakra by Orochimaru.

Chapter 041 – Vengeance

A duel to the death is common in Xianxia novels when a character feels that the person they call out has permanently disabled or has actually killed a close friend or relative of someone.

Chapter 041 – Vengeance

Master Saki is another name for Shredder from Teenage Mutant Ninja Turtles.