--- product_id: 56977173 title: "I Hear the Sunspot: Theory of Happiness (I Hear the Sunspot Series)" price: "¥3899" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/56977173-i-hear-the-sunspot-theory-of-happiness-i-hear-sunspot store_origin: JP region: Japan --- # I Hear the Sunspot: Theory of Happiness (I Hear the Sunspot Series) **Price:** ¥3899 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** I Hear the Sunspot: Theory of Happiness (I Hear the Sunspot Series) - **How much does it cost?** ¥3899 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/56977173-i-hear-the-sunspot-theory-of-happiness-i-hear-sunspot) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Due to the overwhelming success of I Hear the Sunspot, the sequel has finally arrived, I Hear the Sunspot: Theory of Happiness! How will this "more than friends, less than lovers" relationship evolve? --he can't hear . . . ? Because of a hearing disability Kohei is often alone. Taichi is outspoken and cheerful. At first, Kohei keeps himself well guarded, but after he meets Taichi he slowly learns to open up. Review: Best Volume Thus Far, Hits Every Single Note Wonderfully - Theory of Happiness followed the more traditional blueprint for these sorts of romance manga doing little to nothing to stretch its wings beyond the gentlest of softest of entries in the genre. That’s not a ding against it or anything as it’s a really wonderful entry in the ever-evolving relationship between Kohei and Taichi and their feelings without focusing on the more ethically concerning and unsettling aspects that some of the writers like to include in these manga. The introduction of Maya and her muddying the waters between our main characters helped rocket their relationship to a new level. A love confession that Kohei reiterates with Taichi after a really dramatic moment forces Taichi to deal with his feelings. And then Taichi getting a job offer finally gives him a chance to face character growth and some type of maturation with what he wants to do with his life. Together, these pieces of plot add several elements to the story that the first volume lacked, and all of that is with the backdrop of the ever-declining aspect of Kohei’s hearing and the continuing difficulty of those who are only hearing-impaired struggling to find their place in the world. Ultimately, this volume is my favorite of the ones I’ve read so far as it hits every single note that I love. I got the misunderstanding involvement, the blatant confession from Kohei delivered with sign language that just works its way into Taichi’s mind making him finally realize things, and the aspect of time away from one another resulting in Taichi just realizing how much he needs Kohei in his life. Really, this is just plain wonderful and easily one of my favorite Yaoi manga in ages. Like we even got both a hug and a kiss scene that I just love love love to death in these, like, it was enough to make me smile so big and brightly, lol. Overall, really awesome entry. Review: So sweet and uplifting - This is truly one of the sweeter most positive stories I’ve read in a while. I forget how quickly manga stories move. I could read 10 more books about these two. Truly they’ve carved out a place in my heart - and now Maya has too! ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #173,424 in Books ( See Top 100 in Books ) #325 in Yaoi Manga (Books) #1,513 in Shonen Manga (Books) #70,969 in Genre Literature & Fiction | | Customer Reviews | 4.9 out of 5 stars 1,066 Reviews | ## Images ![I Hear the Sunspot: Theory of Happiness (I Hear the Sunspot Series) - Image 1](https://m.media-amazon.com/images/I/71anaRKNouL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Volume Thus Far, Hits Every Single Note Wonderfully *by T***S on May 29, 2019* Theory of Happiness followed the more traditional blueprint for these sorts of romance manga doing little to nothing to stretch its wings beyond the gentlest of softest of entries in the genre. That’s not a ding against it or anything as it’s a really wonderful entry in the ever-evolving relationship between Kohei and Taichi and their feelings without focusing on the more ethically concerning and unsettling aspects that some of the writers like to include in these manga. The introduction of Maya and her muddying the waters between our main characters helped rocket their relationship to a new level. A love confession that Kohei reiterates with Taichi after a really dramatic moment forces Taichi to deal with his feelings. And then Taichi getting a job offer finally gives him a chance to face character growth and some type of maturation with what he wants to do with his life. Together, these pieces of plot add several elements to the story that the first volume lacked, and all of that is with the backdrop of the ever-declining aspect of Kohei’s hearing and the continuing difficulty of those who are only hearing-impaired struggling to find their place in the world. Ultimately, this volume is my favorite of the ones I’ve read so far as it hits every single note that I love. I got the misunderstanding involvement, the blatant confession from Kohei delivered with sign language that just works its way into Taichi’s mind making him finally realize things, and the aspect of time away from one another resulting in Taichi just realizing how much he needs Kohei in his life. Really, this is just plain wonderful and easily one of my favorite Yaoi manga in ages. Like we even got both a hug and a kiss scene that I just love love love to death in these, like, it was enough to make me smile so big and brightly, lol. Overall, really awesome entry. ### ⭐⭐⭐⭐⭐ So sweet and uplifting *by D***D on April 2, 2024* This is truly one of the sweeter most positive stories I’ve read in a while. I forget how quickly manga stories move. I could read 10 more books about these two. Truly they’ve carved out a place in my heart - and now Maya has too! ### ⭐⭐⭐⭐⭐ Been waiting on the continuation! *by K***R on February 19, 2018* Came quickly in mint condition- no tears or bends. This volume is much bigger than the first one! The translation was excellent, a great read. The story is interesting and the characters are fun, so I recommend it for anyone looking for a good time! The extras at the end are so cute haha --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/56977173-i-hear-the-sunspot-theory-of-happiness-i-hear-sunspot](https://www.desertcart.jp/products/56977173-i-hear-the-sunspot-theory-of-happiness-i-hear-sunspot) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-08*