Wotakoi: Love is hard for an otaku, double, book 4
Fujita2020

When Hanako loses a cherished memento, Taro finds himself out in the cold as he pulls out all the wrong stops to try and find a happy resolution. Narumi and Hirotaka offer what support they can while deepening their own relationship, but their help can only go so far... As for Naoya and Ko, perceptive onlookers nudge the pair to close what little distance remains between them, but will they get the hints?