Oshiego to Kiss wo Suru. Baretara Owaru.

is a Japanese light novel series written by Senpuuki Mawaru, with illustrations by Komupi. The series began publication on July 7, 2023 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
I'm in a secret, bad love affair with a love-addicted student... "Secret meeting with my student... Are you excited?" My secret relationship with Kirihara is something I can't tell anyone. It started when I was assigned to Morigawara High School as a teacher. At school, Kirihara is a serious student council presiddent who has earned a lot of trust from her teachers, but when she is alone, she is mischievious, spoiled and jealous. On weekends, I cook meals at her house and play games with her, pampering her like a lover. I can't refuse because of my weakness, but even though I think it's no good, I keep secrets little by little every day... "I feel like I love you, teacher, and I've grown a lot" Kirihara, who honestly confronts her feelings, grows stronger with her suppressed feelings. If anyone were to find out about our relationship, it would be the end...