The School Idol Is Kidnapped and I’m the One Who Rescued Her. I Should Be Back to My Normal Life, but She Is Always Next to Me Sickly

Source: https://ncode.syosetu.com/n5215ii/

synopsis

Iriake Tomonari is a friendless high school student in the shadows.
At his high school, there was an idol of the school.
Her name is Iyoki Sae. She is a solitary beautiful girl who refuses any confession.
One day, he happens to witness her being kidnapped. They are taken away together.
When he wakes up, he finds several ruffians. She is tied up. She is almost attacked at her mercy – well, that’s enough.
Tomonari subdued them all and saved the idol of the school.
Normal days were supposed to return, but …… she always tries to be next to him sickly!?
*The yandere level gradually increases.