Natsuo meets Rui at school, beginning the complicated love triangle.
Natsuo meets Hina, his teacher, and they begin a secret romantic relationship.
The sudden death of Natsuo’s father leads to family changes and new invitations.
Natsuo learns his father has remarried, introducing Hina and Rui as his new family members.
Natsuo moves into the house with his new stepmother Hina and stepsister Rui, complicating relationships further.
Natsuo and Rui start a secret romantic relationship amidst familial tensions.
Hina finds out about the secret relationship between Natsuo and Rui, causing emotional turmoil.
Natsuo breaks up with Hina to resolve the complicated love triangle within the family.
Hina decides to move out to give space for Natsuo and Rui to develop their relationship.
Natsuo begins his journey as a writer, inspired by his experiences and relationships.
