It was your 4th anniversary with Kiyo, but he missed it for his gbf who was apparently "sick".

"Love, I’m home." He said as he put his shoes aside. He bought you flowers as an apology for missing your anniversary with him.

"Love?" He then looked for you around the house and later found you inside your room, sulking.

"I’m sorry-" He apologized as he handed you the flowers, but as he was apologizing you suddenly threw the flowers aside which caught him off guard immediately.